I bought this lock with great anticipation. Never having to carry my keys, just touching the lock to open, giving keys to guests, it just goes on. But then the reality set in. Often the lock will not open. Multiple attempts and nothing. Take phone out of pocket, hold closer....still nothing. Of course, it eventually works, but frustration is not what I purchased--or so I thought. Now there is a next generation--update the software again and make it always work, but please don't try to sell me what I thought I was getting with the first.