Official systems and rules for this profession in Türkiye
Bawabetna summaries of official publications, each linked to its source. The official text prevails. These systems are run by the authorities: you use them directly, and the program keeps your own records organised alongside them.
Guest identity records (Identity Notification Law No. 1774)
Hotels, motels, guest houses, holiday villages and every other kind of lodging must keep the identity, arrival and departure records of every Turkish or foreign guest, day by day, and keep them ready for inspection by the police or gendarmerie at any time (Article 2). The person responsible for the business must be reported to the nearest law-enforcement unit before opening, and any change within 24 hours (Article 3).
Law No. 1774, Articles 2 and 3 · Official source
Records on computer, reported instantly
Every lodging covered by Article 2 must keep all its records on computer day by day, connect to the computer terminals of the general law-enforcement forces and report its current records to them instantly. Not connecting, or not sending data instantly, is fined under the same article.
Law No. 1774, Additional Article 1 · Official source