John Smith & Son Locks Baltimore | 24 hour locksmith in Baltimore MD The Leading Team for Physical Security The leading force in physical security installation and hardware in the local area is John Smith & Son Locks Baltimore. Our company is a united group of professionals dedicated to supplying top notch security solutions for your home, car and office. Our team knows the city inside and out. Our technicians will get to you within no more than 15 minutes. That’s not all, our Baltimore locksmith places low prices high among its aims of service and offers competitive rates like no other. John Smith & Son Locks Baltimore was started by an experienced family of technicians with traditional locksmithing values. We aspire to supply the people of this city with professional, reliable, and affordable physical security services. Service or Product: Locksmith Service Business Hours: 24 hours a day, 7 days a week