I love that it is so easy to use, there are no buttons for me! It's like having an extra set of hands when i'm at work/school because my husband will be able to get into our house easily without needing keys (or even carrying them around).
We have used this product in other homes but not as much here due too being busy building another home - we never realized how handy these could actually become until now!! Not really anything bad about using this system; just wish they came out sooner than 3 years ago! This has made life easier by allowing us all members of family to enter houses quickly if needed instead of going through keyholes which would take time especially during night hours where everyone else was asleep.