I bought a Kevo as soon as it became available. The lock has had no problems. I had to replace the FOB once because it failed. However, it was replaced free of charge. The software has improved significantly since I bought it. It's good now. There are a couple of issues that could be resolved. Sometimes, though not often, the software fails to record that that it has been locked. Once I was out of town when I looked at the record and it showed that the lock had not been locked. I frantically sent somebody to lock it only to find out that, contrary to what the record said, I had indeed locked it. The second issue is that the software does not record that the lock has been activated using a FOB. At the very least they could store this in memory and transfer the information once the lock is operated by a phone. The customer service is very good (and I have not mentioned these issues to them).