I've had this for a year and a half. They've replaced it once under warranty, and it's still terrible.

It's unreliable, cranky and just doesn't work well. It often glows pink when you touch it, which indicates no device that can unlock it is in range. That would be fine except the phone that can unlock it is in my hand or pocket less than 3 feet away. Or it will mysteriously glow blue (which indicates it's about to open) and then stop. And not open. For no apparent reason.

DO NOT BUY THESE DEVICES. They're ridiculously expensive and are massively unreliable.