| Business | Phone |
| Economy Lock & Key 602 Jackson St, Michigan City 46360 | (219) 872-4075 |
| Michiana Lock Security 217 Overhill Trl, Michigan City 46360 | (219) 879-7864 |
| Midwest Lock & Key Co 1400 Elston St, Michigan City 46360 | (219) 874-3171 |
| Schneider's Lock & Security 908 Washington St, Michigan City 46360 | (219) 872-9973 |