同埋香港身分證最後四位數字
and the last four digits of your Hong Kong ID card.

Cantonese Sentence Breakdown

同埋 tung4 maai4
and; together with
香港 hoeng1 gong2
Hong Kong
身分證 san1 fan6 zing2
identity card
最後 zeoi3 hau6
last
四 sei3
(slang) labourer
位 wai6
position
location
place
seat
classifier for people (honorific)
classifier for binary bits (e.g. 十六位 16-bit or 2 bytes)
throne
post
rank
status
數字 sou3 zi6
number