This is how casinos, hospitals universities, retail chains, and now homeowners can change their own locks in seconds. If a key is lost or stolen, change them yourself!
Watch below to see how simple it is. Just insert your special control key in your lock. Turn it to 1 or 11 o'clock and pull out the core. Use the same control key to insert the new core. It takes less than a minute. Hand out the new keys and your property is secure again. There are no tools or lock disassembly required. Send the old core back to your BiLock dealer and they can pin it to another code in case you need to change them again.
Order a set of backup cores and keys so you can change your locks any time you need.
There are cheap change code locks available in hardware stores today. Unfortunately the bump keys and picks used to open your lock the first time can still open them after you change the code!