
Security Guides & Comparisons
Deep-dive analyses and brand-specific product comparisons to help you choose the best hardware for your property.
What Our AI Security Assessment Actually Checks
A transparent look at what our free AI Security Assessment analyzes, how it generates recommendations, and its limitations compared to an in-person audit.
Case Study: Diagnosing a String of Failed Door Operator Inspections at a Brooklyn Shelter
A Brooklyn supportive housing project kept failing city inspection on its automatic door operators even after two rounds of brand-new replacement parts. Here's what was actually wrong, and how we found it.
Best Driveway & Perimeter Alarms of 2026
The best driveway and perimeter motion alarms of 2026 — early-warning systems that alert you before someone reaches your door.
Best Security Cameras for Apartments
The best security cameras for apartments and rentals in 2026 — wireless, no-drill, and lease-friendly options that don't require permanent installation.
Best Smart Lock for NYC Apartments
The best smart locks for NYC apartments, co-ops, and rentals — including which ones don't require replacing your building-approved exterior lock.
Camera Placement Guide for NYC Brownstones & Multi-Unit Buildings
Where to actually place security cameras on a NYC brownstone or multi-unit building — coverage, privacy lines, and common placement mistakes.
Cloud vs. Local Storage for Security Cameras Compared
Cloud storage vs. local (SD card/hub) storage for security cameras — cost, reliability, and privacy tradeoffs explained.
Cost of Commercial Access Control Installation in NYC
What a commercial access control system costs to install in NYC — per-door hardware pricing, software fees, and what drives the total.
Security Audits for Commercial & Multifamily Properties
How a commercial or multifamily security audit differs from a residential one — access control, compliance, and shared-space risk explained.
DIY Security Checklist vs. a Professional Audit
Should you run your own home security checklist or hire a professional audit? A practical comparison of cost, accuracy, and when each makes sense.
Grand Master Key Hierarchy for Multi-Building Portfolios
How grand master key systems work across multiple buildings — hierarchy design, key control, and what property portfolios need to know.
Keyless Entry vs. Master Key for Commercial Buildings
Keyless entry (fob, keypad, app) vs. a traditional master key system for commercial buildings — cost, control, and which fits your property.
The Complete NYC Apartment Security Guide
What NYC law actually requires on your apartment door, what your landlord is responsible for building-wide, and how to secure your home beyond the legal minimum.
NYC Fire Code & Access Control Compliance Guide
How NYC fire code governs mag locks, keycard readers, and egress doors. A property manager's plain-English guide to access control compliance in NYC buildings.
Rekeying vs. Master Key: Which Is Right for Your Building?
Rekeying individual locks vs. installing a master key system — cost, security tradeoffs, and which approach fits your property.
Smart Lock Ecosystem Brands Compared: August vs. Schlage Encode vs. Level vs. Yale
August, Schlage Encode, Level, and Yale smart lock ecosystems compared — connectivity, app quality, retrofit options, and which fits your door.
Smart Lock Installation Cost in NYC
What smart lock installation actually costs in New York City — hardware price ranges, professional install fees, and what affects the total.
Video Intercom + Access Control Integration
How video intercoms integrate with commercial access control systems — visitor management, remote unlock, and what to look for.
What Is a Security Audit? How a Home Security Assessment Works
Learn what a home security audit actually involves, what it checks, and how a professional or AI-assisted assessment identifies real vulnerabilities.
Kwikset vs Schlage vs Medeco Compared
An honest breakdown of the top door security brands. Find out what you're actually paying for, and how these products impact real-world security.
Deadbolt Grades: ANSI/BHMA Explained
A comprehensive guide to understanding ANSI/BHMA deadbolt grading to ensure you choose the right lock for your security needs.
Door Reinforcement: The Ultimate Guide
Learn how to reinforce your doors against forced entry. This comprehensive guide covers door frames, hinges, locks, and practical steps to secure your property.
Fire Doors: Life Safety Infrastructure
A detailed guide on fire doors, their ratings, essential components, and maintenance requirements to ensure life safety and code compliance.
A Comprehensive Guide to Panic Bars (Crash Bars)
Understand the vital role of panic bars in commercial door security and life safety. Learn about compliance, types, and maintenance.
Smart Locks Explained: Convenience Meets Security
Are smart locks safe? Learn how smart locks work, their security features, and how to choose the right smart deadbolt for your home.
Strike Plates: The Unsung Hero of Door Security
Discover why upgrading your strike plate is the most cost-effective way to secure your door against kick-ins. Learn how to choose and install the right one.
Hardware Reviews & Ratings
Explore our exhaustive list of product reviews, roundups, and buyer's guides for the latest security hardware.
Best Apple HomeKit Smart Locks (2026 Guide)
Our 2026 guide to the best Apple HomeKit smart locks, featuring Apple Home Key integration, Thread and Matter support, and Siri compatibility.
Best Doorbell Cameras (2026 Guide)
Our Manhattan security team's rankings of the best doorbell cameras, comparing the Google Nest Doorbell, Ring Video Doorbell Pro 2, and Wyze Video Doorbell v2.
Best Fingerprint Door Locks (2026 Guide)
Our Manhattan security team tests and ranks the best fingerprint door locks for 2026. Compare biometric performance, pricing, and installation notes before you buy.
Best High-Security Deadbolt Locks (2026 Guide)
Our Manhattan security team's 2026 guide to the best high-security deadbolt locks, featuring Medeco, Mul-T-Lock, Schlage Primus, and top smart-lock alternatives.
Best Peephole Security Cameras (2026 Guide)
The definitive guide to the best peephole security cameras in 2026. Our Manhattan experts test and rank the top options for renters and homeowners.
Best Pick-Proof Door Locks (2026 Guide)
Looking for pick-resistant locks? Our Manhattan security team ranks the locks that defeat modern lock-picking and bumping techniques, including Abloy and Medeco.
Best Retrofit Smart Locks (2026 Guide)
Our Manhattan security team's 2026 guide to the best retrofit smart locks — August, Level Bolt, Wyze, and SwitchBot compared for renters and homeowners.
Best Smart Door Locks (2026 Guide)
Our Manhattan security team's 2026 guide to the best smart door locks, comparing the Schlage Encode Plus, August Wi-Fi Smart Lock, and SwitchBot Lock Pro.
Best Wi-Fi Smart Locks (2026 Guide)
Our Manhattan security team's guide to the best Wi-Fi smart locks. Ditch the hubs and discover the top locks with direct Wi-Fi connections for remote access.
Best Google Home Smart Locks (2026 Guide)
Our Manhattan security team's guide to the best Google Home smart locks. Discover the top Google Assistant-compatible locks from Yale, Nest, and more.
Best Video Doorbells (2026 Guide)
Our Manhattan security experts rank the best video doorbells of 2026, comparing Ring, Google Nest, Eufy, Lorex, and Blink for video quality, AI detection, and cost.
Security Guidance for Co-op & Condo Boards
How co-op and condo boards evaluate lock upgrades, access control, and building-wide security decisions without violating fire code or the certificate of occupancy.
Security Solutions for Hotels & Hospitality Properties
Master keying, electronic locks, and access control built for hotels and short-term rental operators, where guest turnover happens daily instead of yearly.
Security Solutions for Property Management Companies
Standardized locks, master key systems, and access control for property management portfolios. How to secure multiple buildings without multiplying your workload.
Security Solutions for Retail Stores & Storefronts
Storefront hardening, access control, and camera systems for retail locations, covering both after-hours break-ins and in-store loss prevention.
The 10 Best Portable Travel Door Locks for 2026
Discover the 10 best portable travel door locks of 2026. Our Manhattan security experts review top picks for hotel and Airbnb security.
10 Things You Can Do to Reinforce Your Front Door
Learn the top 10 actionable ways to reinforce your front door against break-ins. Expert tips from our Manhattan security team, available nationwide.
Best Apartment Smart Locks (Renter Safe)
Discover the best renter-friendly smart locks for apartments in 2026. Door Security Group reviews top retrofit options that won't violate your lease.
Arlo Video Doorbell Review: Complete 2026 Breakdown
Our Manhattan security experts review the Arlo Video Doorbell in 2026. Discover its pros, cons, pricing, and how it compares to Ring and Nest.
Arlo Pro 2 Security Camera System Review
An in-depth review of the Arlo Pro 2 Security Camera System. Is this older model still worth buying in 2026? Our Manhattan experts weigh in.
Armor Concepts Door Reinforcement Review
Our in-depth review of the Armor Concepts Entry Door Reinforcement kit. See how it stands up to real-world kick-ins and why we recommend it.
August Smart Lock Pro Review: Complete Breakdown
Our complete 2026 review of the August Smart Lock Pro. Discover its features, Z-Wave compatibility, and how it performs in real-world security scenarios.
August Smart Lock Review: Is It Worth It?
Read our comprehensive 2026 review of the August Smart Lock. We cover pricing, security features, installation, and whether it's worth your investment.
Best HomeKit Smart Locks 2022 Update
We update our 2022 Apple HomeKit lock guide for 2026. See how Thread, Matter, and Apple Home Key have revolutionized the best smart locks for iOS users.
Best Biometric Front Door Locks of 2026
Discover the best biometric (fingerprint) front door locks of 2026. Our Manhattan security experts compare sensor speed, weatherproofing, and backup access.
Best Deadbolt Locks for Home Security in 2026
Find the best deadbolt locks for home security in 2026. Our Manhattan security experts rank top models from Schlage, Medeco, and Yale.
Best Deadbolts on a Budget: Top Picks Under $50
Secure your home without breaking the bank. Discover the best budget deadbolts under $50, recommended by our NYC security experts.
Best Door Peephole Viewers of 2026: Our Top Picks
Discover the best door peephole viewers of 2026. Our Manhattan security experts review top digital and optical peepholes to enhance your home's security.
Best Entry Door Reinforcement Kits of 2026
Discover the best entry door reinforcement kits of 2026. Protect your home from kick-ins with our top expert-tested recommendations.
Best Fingerprint Locks: 2020 Update
Discover the best fingerprint door locks originally reviewed in 2020, completely updated for 2026. Compare prices and find your perfect security solution.
Best Fingerprint Locks: 2021 Update
Discover the best fingerprint door locks originally reviewed in 2021, completely updated for 2026. Compare prices and find your perfect security solution.
Best Fingerprint Locks: 2022 Update
Discover the best fingerprint door locks originally reviewed in 2022, completely updated for 2026. Compare prices and find your perfect security solution.
Best Security Front Doors of 2026: Our Top Picks
Looking for the ultimate security front door? Read our 2026 guide to the best solid core, fiberglass, and steel security doors on the market.
Best High-Security Deadbolts (2026)
Our 2020 guide to high-security residential deadbolts has been fully updated for 2026. Discover the latest top picks from Medeco, Schlage, and more.
Best High-Security Deadbolts: 2021 Update
We've updated our popular 2021 list of the best high-security residential deadbolts for 2026. See what's changed and what locks you should buy today.
Best Outdoor Wireless Security Cameras
Discover the best outdoor wireless security cameras of 2026. Our Manhattan security experts compare Ring, Arlo, Eufy, and Blink for home protection.
Best Home Security Window Locks of 2026
Discover the best home security window locks of 2026 — sash locks, sliding locks, and pin locks reviewed by our Manhattan security experts.
Best Window & Door Intrusion Alarms 2026
Discover the best intrusion sensor alarms for windows and doors of 2026. Our Manhattan security experts compare contact sensors and standalone alarms.
Best Keyless Deadbolt Locks of 2026
Discover the best keyless deadbolt locks of 2026. Our Manhattan security experts compare keypad-entry deadbolts for exterior doors.
Best Keyless Interior Door Locks 2026
Discover the best keyless interior door locks of 2026 for bedrooms, offices, and nurseries. Reviewed by our Manhattan security experts.
Best Locks for Airbnb Hosts 2026
Find the best locks for your Airbnb property in 2026. Keep guests safe and manage access remotely with DoorSecurityGroup's top smart lock picks.
Best Motion Sensor Outdoor Lights of 2026
Discover the best motion sensor outdoor lights of 2026. DoorSecurityGroup reviews top picks like Ring and Arlo to keep your property secure.
Best Peephole Cameras: 2020 Update
Looking back at the best peephole security cameras of 2020, updated with our 2026 Manhattan security expert recommendations and modern alternatives.
Best Peephole Cameras: 2021 Update
A look at the best peephole security cameras from 2021, fully updated with our Manhattan security team's 2026 recommendations and reviews.
Best Portable Travel Locks (2026)
Discover the best portable travel locks of 2026. We updated our 2021 guide with the latest hotel and Airbnb security tools to keep you safe on the go.
Best Push-Button Mechanical Door Locks of 2026
Discover the best push-button mechanical door locks of 2026 — no batteries, no app, no Wi-Fi. Reviewed by our Manhattan security experts.
Best Retrofit Smart Locks: 2020 Update
Our 2020 guide to retrofit smart locks, updated for 2026. Keep your keys and exterior hardware while adding smart functionality to your existing deadbolt.
Best Retrofit Smart Locks: 2021 Update
Updating our 2021 retrofit smart lock recommendations for 2026. Discover the latest internal smart locks from August, Level, and SwitchBot.
Best Self-Installed Home Security Systems of 2026
Compare the best DIY home security systems of 2026. SimpliSafe, Ring, and more reviewed by Manhattan's DoorSecurityGroup.
Best Sliding Glass Patio Door Locks of 2026
Discover the best sliding glass patio door locks of 2026 — security bars, pin locks, and track blockers reviewed by our Manhattan security experts.
Best Smart Locks That Work with Alexa in 2026
Looking for the best Alexa-compatible smart locks? Door Security Group reviews the top voice-controlled deadbolts for seamless Amazon integration in 2026.
Best Apple HomeKit Smart Locks (2026)
Originally published in 2021, this updated 2026 guide reveals the best Apple HomeKit smart locks, featuring Apple Home Key integration and Siri support.
Best Solar-Powered Motion Sensor Lights of 2026
Find the best solar-powered motion sensor lights of 2026. Expert reviews and top picks from DoorSecurityGroup for eco-friendly home security.
Best Video Doorbells of 2020 (Updated for 2026)
Reviewing the top video doorbells of 2020 and how they hold up in 2026. See our Manhattan experts' updated recommendations for home security.
Best Video Doorbells of 2021 (Updated for 2026)
Our comprehensive review of the best video doorbells from 2021, completely updated with top 2026 picks by our Manhattan security experts.
Blink Wireless Security Camera System Review 2026
Our complete 2026 review of the Blink Wireless Security Camera System. Discover if this Amazon-owned brand delivers on its budget-friendly promises.
Brinks Home Security Systems Review 2026
Our comprehensive 2026 review of Brinks Home Security. Discover if their smart home integration and monitoring services are right for you.
Brinno Peephole Camera Review (2026)
Our in-depth 2026 review of the Brinno Peephole Security Camera (SHC1000). Find out if this local-storage, privacy-focused camera is right for your home.
Why Understanding Lock Grades Matters Before You Buy
Not all locks are created equal. The ANSI/BHMA grading system is the industry standard for testing lock durability and security. A Grade 3 lock might look identical to a Grade 1 on the shelf, but underneath, it's the difference between a minor deterrent and professional-grade fortification.
- Grade 1: Commercial StrengthTested to 1 million cycles and intense forced entry.
- Grade 2: Heavy ResidentialExcellent balance of security and affordability for most homes.
- Grade 3: Basic SecurityMeets minimum requirements. Best for interior doors.