I tested a TCL smart lock, and its palm vein recognition feature blew me away

• The TCL D1 Pro smart lock is available for $170.
• This smart lock features some of the most reliable and fastest palm recognition technology I've tested, and it has a rechargeable battery instead of the standard replaceable batteries.
• The TCL D1 Pro's biggest downfall is the app, which is not user-friendly for customizing settings and feels outdated.

Palm vein recognition is becoming quite popular among smart lock manufacturers, and the TCL D1 Pro is one of the most affordable locks to feature this technology. At $170, this TCL smart lock supports six unlocking methods, including palm vein technology, remotely through the app, touch keypad, NFC key fobs, third-party voice control through Google or Alexa, and physical keys.

Also: Forget Ring: This security video doorbell has similar features and no subscription fees

The TCL D1 Pro is pretty easy to install. At 2.79 inches wide, it is slightly ...