We use the lockitron app to let houseguests in (and we have many cause of AirBNB). Since you can give a key to someone with a simple email, it eliminates the h

We use the lockitron app to let houseguests in (and we have many cause of AirBNB). Since you can give a key to someone with a simple email, it eliminates the hassle of arranging a time to meet for key exchange. https://lockitron.com/ https://lockitron.com/