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Dongle Emulator, Backup and Recovery

QuestionWe are in need of a replacement in case our original fails. It is from on old Cado Contel Tiger CPS Dos system. The info on it is: Grainbow Centinel Pro CPS NU-30679. Can this be duplicated or are they any old working ones available?
AnswerFor DOS application there's no way to make dongle emulator since they do not use low level drivers so in each case such solution is customized. For DOS software it is required sending us the software. Sentinel CPlus dongle can be emulated rather easy so there must be no problems about it.

Sentinel emulator

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HASP emulator

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I was truly skeptical at first but once I received the trial I was happily surprised and purchased the permanent license. The product works well and the turn around was fast and hassle free. I would recommend this service to anyone needing an alternative to the dongle.
Shawn from USA, California