I'm a realtor and Advanced Lock and Security provided service for a client of mine. They had an older home with a really unusual lock, so it was tricky. The gentleman who came out from Advanced Lock and Security was just really smart. My husband and I tried to get the lock to work but we couldn't. I don't know what this guy did but he got it to work. He obviously has advanced skills. It was a specialty lock, very very old, so it wasn't typical and this young man figured it out and was able to make keys really quickly. I would use this service again in a heartbeat, I definitely want to keep them in my repertoire. The prices are fair. I would highly recommend them.