
How a Key Made From Lock Actually Works — The Decoding Process
When a locksmith says they can produce a key from a lock, they mean they will physically examine and measure the internal components of the lock to determine the exact bitting code — the series of depths and cuts that a matching key must have. For pin tumbler locks, such as most residential door knob locks and standard deadbolts, a trained technician can remove the lock cylinder, read the pin stack heights with precision gauging tools, and translate those measurements into a cut key. For more complex hardware like a mortise lock — the type commonly found in older San Antonio commercial buildings, historic Alamo Heights storefronts, and multi-unit residential properties — the cylinder is typically removed from the mortise body and decoded the same way, though the reassembly requires familiarity with the more intricate internal mechanism.
For vehicle keys, the process varies by make and model. Many modern cars require the technician to pull the key code through the vehicle's OBD port or by reading the lock tumblers in the door lock cylinder, then cut and program a new transponder key or key fob on-site. Regardless of lock type, ownership verification is always completed before any work begins — our technicians will ask for proof of ownership or residency, which is standard professional practice and protects everyone involved. If you're in the middle of a stressful situation and aren't sure what documents to have ready, call us at (704) 850-6756 and we'll walk you through exactly what to bring.

