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All two letter prefixes are reserved for the ISO 3166-1 alpha-2 country code, followed by an identifier assigned by that country's national library authority. Global-level identifiers can also be assigned, which are not associated with a particular country, e.g. 'oclc-' for the OCLC .
1 Instruction code - indicates the specific command, e.g., "select", "write data" P1-P2 2 Instruction parameters for the command, e.g., offset into file at which to write the data L c: 0, 1 or 3 Encodes the number (N c) of bytes of command data to follow 0 bytes denotes N c =0 1 byte with a value from 1 to 255 denotes N c with the same length
Print Tag; Passive RFID Tag/Smart Card; Active RF Tag (built-in battery type) Active Infrared Tag (built-in battery type) Acoustic Tag; Print tags can be matrix codes, e.g. QR codes or barcodes. A special sub-section of RFID tags are NFC tags, which can contain ucode. UID Center has certified a 46 differenrf ucode tags, the first ones in 2003 ...
However, library RFID tags do not contain any patron information, [102] and the tags used in the majority of libraries use a frequency only readable from approximately 10 feet (3.0 m). [96] Another concern is that a non-library agency could potentially record the RFID tags of every person leaving the library without the library administrator's ...
ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes. ISO 3166-1 numeric – three-digit country codes which are identical to those developed and maintained by the United Nations Statistics Division, with the advantage of script ...
Cards may be Type A and Type B, both of which communicate via radio at 13.56 MHz (RFID HF). The main differences between these types concern modulation methods, coding schemes (Part 2) and protocol initialization procedures (Part 3).
When three-digit codes share a common leading pair, the shared prefix is marked by an arrow, (↙ ) pointing down and left to the three-digit codes. Unassigned codes are denoted by a dash (—). Countries are identified by ISO 3166-1 alpha-2 country codes; codes for non-geographic services are denoted by two asterisks (**).
By August 5, 2015, all stations of Line 1 and Line 2 were already using beep cards. [9] A unified ticketing system for all elevated rail lines in Metro Manila was completed when the beep card system became available to use in all stations of the MRT Line 3 line on October 3, 2015. [10] [9]