The Samsung SHS-2920 EX is a smart lock that looks like a smartphone. Unlike some other smart locks, it won't work with your smartphone, but at least you'll be familiar with the keypad interface. As you might guess, it's a combination lock, with a glossy touchscreen to protect the numbers from suspicious rubbing marks that might give a burglar a clue as to which numbers you've been pushing. The system gives you a two-digit random number, which you'll presumably have to memorize, before it goes into combination-setting mode, so random strangers who know how to re-program the lock still can't install their own easy-entrance passes.
A security button on the lock puts it on high-awareness mode while you're out, setting off an alarm if an intruder tries to force the lock from either side. (Of course, if they're already inside your house, they might not need the door, unless they're planning to carry out your sofa and armchairs.) The lock has been tested against high-voltage power surges and fire, apparently coming out of the experience in working order. In the event of fire (i.e., it detects temperature in excess of 60 degrees Celsius or 140 degrees Fahrenheit), the lock unlocks automatically, so you can let the fire fighters in (or use the fire extinguisher) just by moving a lever.
The lock also works with a smart tag, if you want, as a secondary security measure. You still have to enter your code, but the lock has to detect the presence of the tag, which you can hang on your key ring. This may seem like a hassle, but it's optional and only for use if you're paranoid or afraid the wrong people may have your code. There's also a volume control for the keypad, which suggests that it can be fairly noisy at the wrong settings.
Smart locks with combination pads are available from other companies. Look at the Schlage Touch or the Yale Real Living YRL220. Or if you want a lock that doesn't look like a smartphone but will open when it detects your smartphone, look at the Kwikset Kevo.
This lock easily paired with my home automation system. I installed very easily with the English manual... It works perfectly and very smoothly.
Horrible! Only works on certain locks. Do not buy. Get the newer EZ version and save yourself from a return.