Restricted Keys

Each manufacturer offers different lines of keys and cores/cylinders with varying levels of protection. The following is a selection of the brands and corresponding lines that Opening Technologies supports. We usually meet with customers considering a new key system to discuss the pros and cons of different options. Please e-mail Key Services directly to set-up a meeting, ask a specific question or to get our self-assessment checklist.


  • Classic
  • Everest 29
  • Everest Primus XP


  • M3
  • KeyMark X4
  • eCylinder


  • BEST¬†keyways