With mobile units throughout all 5 boroughs, our technicians will get to you in 20 minutes or less. We’re licensed and experienced so we not only get to you fast, but we get you back on your way fast, too. All our locksmiths can replace your key FOB, transponder key, keyless entry unit and panic button right from their van, even if you’ve lost the original. That’s lockout technology most other locksmiths don’t provide.. The NYPD, FDNY and New York City Sheriff all use M&D Locks and Keys. So do thousands of New York City residents. We encourage you to check our 5-star reviews in Yelp, Google and Angies List.