Keys have evolved over the last few years, quite significantly. There are cars which no longer require keys at all, starting at the touch of a button when the key fob is nearby. These days, people like controlling all of their stuff via smartphones, and I think it wouldn’t be a bad idea to control door locks with them. Or not.
The August Smart Lock is a system that allows anyone to enter your home, if they’ve been granted a virtual key.
Read more @ Technabob