I have a programmable front door lock, but you need to be physically at the lock, and have a special code to reprogram the lock. It can have up to 10 opening codes, and any one or more can be enabled or disabled, using the special code. This lock is by Schlage, and is available from both Lowes and Home Depot.
A word of caution on the units that can be reprogrammed by cell phone, double check the security of these locks. I stayed away from these as I was concerned about hacking the lock to get entry to the house.
Also, if you use the search phrase "cellphone programmable door locks wireless" in Google you will get lots of additional info.
Hope this helps.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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