Philips DPM8000 Technical Documentation Manual page 55

Note:
Please make a local copy of the authorPIN.csv file. Digital Pocket Memo will be deleting this after
import to internal memory and you can not recovery this file.
If the keyword1PIN-flag has been set (because a valid authorPIN.csv was found on the SD Memory
Card), the only way to reset this flag again is to revert to factory default settings via DPM4-menu.
If a line in the authorPIN.csv file has a PIN but no author, or vice versa, the line is ignored.
The device will not accept an authorPIN.csv file if a PUK is configured for this device. The PUK must
be reset via DPM4 menu with the factory default function in order to accept the authorPIN.csv file
again.
Page 55 DPM 8000 series - Technical Specification and Advanced Device Configuration