What is an NFC lock? It's an electronic lock that checks a credential over near-field communication (NFC), the 13.56 MHz radio standard that only works when two devices are a few centimeters apart (NFC Forum). You tap a card or a phone, the lock verifies it, and the latch releases. Where NFC locks differ most is in where their power comes from. That last point gets lost in most product listings. Search for "NFC lock" and you'll find hotel keycard readers, home deadbolts with

Properly implemented, yes — an NFC lock that pairs AES-256 encryption with challenge-response authentication has no practical wireless attack today. The honest caveat lives in the word implemented. The market spans hardware that never transmits a copyable credential and hardware that announces one fixed ID to anyone who asks, and which end of that spectrum a product sits on decides whether "NFC" means protection or exposure. So instead of the usual "buy from a reputable bran

NFC energy harvesting is the process of turning the 13.56 MHz radio field emitted by an NFC device — usually a smartphone — into usable electrical power. Every NFC link is built on inductive coupling between two small antenna coils, and a passive NFC device sitting in that field can do two things at once: exchange data and draw energy (near-field communication standards, ISO/IEC 18092 and ISO/IEC 14443). A battery-free lock pushes the second capability to its logical end. Th

The short answer: NFC is not a competitor to RFID — it is a specialized subset of it. NFC (near field communication) is built on high-frequency RFID at 13.56 MHz, adds two-way communication, and works over roughly 4 cm (ISO/IEC 18092 and related standards). RFID is the broader family, spanning three frequency bands with read ranges from centimeters to ten meters. Bluetooth is a different technology entirely — a battery-dependent radio link designed for continuous connections