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Handheld Encryption Key Programmer for Windows Mobile Device


A telecommunications equipment provider needed to develop the next-generation of their encryption key generation and programming device for Federal and public safety environments.

    Problems with the existing solution:
  • Existing product was approaching obsolescence due to diminishing parts availability
  • Numerous legacy products were to remain in use requiring multiple communication interfaces to be implemented


SEP developed a Windows Mobile application to run on an off-the-shelf handheld device. The solution required interfacing and integration with numerous components of the overall public safety system architecture.

  • Implemented complex multi-layer communication utilizing standard and proprietary protocols
  • Implemented a touch screen gesture engine for user navigation and interaction
  • Developed multiple simulators for the proprietary encryption and data services device and legacy products


SEP provided an updated application with an enhanced user experience to meet the needs of the Federal and public safety personnel.

  • The 4-line character-based LCD display on the existing product was replaced with a color touch-screen
  • Existing devices were able to interface with the new application
  • Custom gesture and control engine designed to support non-stylus touch-screen operation (finger control)
  • Developed USB drivers to interface with the proprietary services device and supported supplemental devices
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