PhaseOne P 65+ User Manual page 23

Secure Storage System (3S)
The Phase One Secure Storage system (3S) provides the industry's
safest memory card handling ever.
When working with memory cards in a Phase One P+ back, you can
always be sure that your data is safe.
The 3S technology automatically checks your cards file structure every
time it is inserted to the P+ back.
If the disk check function finds errors on the card, it will prevent usage
of the card until these are corrected or the card is formatted.
Read a more detailed description in the chapter dedicated to Secure Storage Sytem.
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