31Standard programs5.2.3 Sample ID and operator ID with the optional RFID Sample ID Kit (not available onall models)The optional RFID Sample ID Kit consists of:• A LOC 100 RFID Locator• An operator RFID tag• Five location RFID tags and• Three sample bottle RFID labels each, in black, red, green,blue and yellowThe operator and location RFID tags can be written to and read inby the RFID module in the DR 3900 as often as required.More information can be found in the user manual for theLOC 100 RFID Locator.5.2.4 Security settingsThe "Security" menu contains a variety of security settings tocontrol access to various functions.All functions can be allocated to three different security levels:• not secured: every operator can make changes in this area.• one key: every operator assigned this security level canmake changes to non-secured functions and functions withone key.• two keys: every operator assigned this security level canmake changes in all functions1. Press Security in the "Instrument Setup" menu.2. In order to open the Security List, assign a password assecurity administrator. Press Security Password.3. Use the alphanumeric keypad to enter a new securitypassword (up to 10 characters) and press OK to confirm.