QK Security and Locksmith is Chicago most reliable locksmith company. At QK Security and Locksmith we are experienced, licensed and accredited locksmith in Chicago. Our locksmith services cater to both residential and commercial residents in Chicago and the surrounding area. We are a one stop shop locksmith company. Our locksmith services includes, lockout, lock installation, lock repair, key duplication, car locksmith, emergency locksmith, re-keying locks, high security locks, safe repair, safe installation, intercom installation and more.