A unique device identifier (sometimes called a universally unique ID or UUID) is a string of characters that is incorporated into a device by its manufacturer and can be used to uniquely identify that device (for example an IMEI number of a mobile phone).
Kitambulisho cha kipekee cha kifaa (wakati mwingine huitwa Kitambulisho cha kipekee ulimwenguni au UUID) ni utungo wa herufi ambazo hujumuishwa katika kifaa na aliyetengeneza kifaa hicho na zinaweza kutumiwa kukitambulisha (kwa mfano nambari ya IMEI ya simu ya mkononi).