Since 2015 Portugal has more strictly enforced a longstanding law requiring anyoneproviding paid holiday accommodation to record the entry, exit, and identification details ofall nonPortuguese nationals who use that accommodation. This law has been brought intoforce in Portugal and most other EU countries at some point since the gradualimplementation of the 1990 Schengen Agreement that aims to stop human trafficking andother illegal practices. In this case, it is specifically Article 45 of the Schengen Agreementand the recent Alojamento Local law in Portugal that has brought this rule into sharperfocus.The governing body that monitors the movement of foreigners is SEF (Serviço deEstrangeiros e Fronteiras or the Immigration and Borders Service).