Protected Data Storage (CHDU)

A Protected Data Storage is a device which enables a write-once-read-many (WORM) data preservation according to the requirements of the Financial Administration of the Slovak Republic. The Slovak legislation specifically demands this device to be used for storage of accounting documents from the billing system eKasa. The Protected Data Storage can be located inside of a tablet, a smartphone or a PC, a laptop, or it can be in a form of an external storage.



CHDU Lite was created as a result of technological compromise – minimalism connected with a high performance. It is aimed at shops with small to medium turnovers.

Main features

  • 16 GB storage
  • Standard serial port for a printer, 9 or 25 pin variant
  • Fast – a special, optimized communication protocol
  • Compact – minimalised by the choice of used components and a precise design
  • Technical support for integrators