The Professional Locksmith with Integrity

(307) 200-7040

Auto Lockouts

House Lockouts



Auto Keys

Everything Else

Located in Casper,  Sentinel Lock And Door provides experienced and fast unlock services as well as lock, key, and door hardware service, repair, and replacement with over nineteen years of experience.

We service Casper, Bar Nunn, Alcova, Glenrock, Douglas, and Casper Mountain for most service calls. We also service outlying areas around Casper, as well as Gillette, Sheridan, Riverton, Rawlins, Guernsey, Torrington, and Wheatland for commercial customers.

Rankrise Studio

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Lana Janssen

May, 2023

While traveling between Rawlins, Wyoming and Billings, Montana, I stopped at a small business in Casper and realized when I returned to my pickup that I had locked my keys inside. Mr. Geer returned my call and came very quickly. The first thing he did was introduce himself and hand me his business card. He had my truck open within minutes and I was on my way. What could have been much more stressful for me became just an inconvenience. He was kind, efficient and I felt safe.

Ken Kozola

September, 2023

I was very impressed with the service received from Sentinel. I called for assistance shortly after 8 am on a Saturday morning to open a deadbolt lock and before 9am the job was completed. Very prompt professional service! I recommend Sentinel Lock & Door service to anyone needing lock service. I will definitely keep them at the top of my list for future assistance.

johnny utah

September, 2022

Prompt and honest. He was on the location within 15 minutes. Got me in the truck and even suggested ways of saving myself a few bucks.

Alex S

Mar 4, 2021

Positive: Professionalism, Punctuality, Quality, Value

Todd is very professional and very fast at what he does. He unlocked my car at J’s Pub and had a new fob for me the next week at a price dealerships can’t compete with. He is a great guy that puts time, effort, and care into his work. I will definitely be recommending him to everyone I know.

Branden H

January 12, 2023

Not all heroes wear capes. After driving from Utah for a job orientation I locked my keys in my car an hour before orientation. Sentinel Locksmith saved my job. Truly grateful for this man.

Daniel Blake

August, 2022

Todd arrived on time.He got right to work. He completed the job in a timely manner.I knew right away that he knew EXACTLY what he was doing.If I ever need a locksmith again, I will call Sentinel.

Timothy K

Apr 14, 2020

I own a business and accidentally locked my keys in my vehicle when going into a customers home. Finished up the appointment and noticed i could not get in my vehicle. Made a phone call and he arrived in such a short amount of time. Had my vehicle unlocked in the bitter cold wind in such a short time frame and charged for a very reasonable cost. Was expecting to pay more. Thank you. A pleasant experience in an unpleasant situation

Amber B

Nov 9, 2019

This guy is very polite and understanding! Such a nice guy and came to me quickly without me having to wait long. And he got the job done fast! If you ever need someone for a locksmith, I definitely recommend him!!

Jeremy D

April 2, 2021

About 1/2 inch of my motorcycle key broke off in the ignition, I called multiple locksmiths in town and was told, “you’re on your own.” I called sentinel and scheduled a time for a locksmith to come out and remove it. Todd gave me a reasonable estimate and said if he couldn’t get it out he wouldn’t charge. He tried multiple ways to get the key out, but it wouldn’t budge. We ended up removing the ignition from the bike and he then took it apart on the spot and got the key out. He then helped me reinstall the ignition on the bike. Todd tried everything in his power to get that key out. Todd demonstrated the highest level of customer service and professionalism. While I hope to not have an issue like this again, it is nice to know Todd is there to help!

Our Services for Your Needs

The most important goal of our business is to build trust with you, working with you to ensure that your needs are met with the best service and a great warranty.

Automotive, Home, and Business Lockouts

Haven't we all had that bad day! Locked out of your car, locked out of your home, or anything else, we're ready to help.

Door Hardware Repair, Replace, and Install

Including door closers, exit devices, locks, paddles, and hinges.

Home Rekey and Business Rekey

For lost or misplaced keys or employee or tenant turnover.

Office Furniture Locks and Keys

For busy office workers to help keep their stationery and files secure.

Repair or Installation of Locks

Any lock or door with a misbehaving lock can be made operable again.

Recreational Vehicle Replacement Keys

When you want a spare key or have lost your last one.

Master Key Systems for Businesses and Rentals

A convenient solution for complete key control.

High Security Key Systems

Keep your company's keys under control with a restricted, high-security key system that prevents unauthorized duplication.

Car Keys, Remotes, "FOBs," and Prox Keys

Providing lost key replacement services for cars and trucks at a fraction of the dealer cost.