調べてみると、カードが有効なものかを確認できるSGWorkPassというMOM(Ministory of Manpower)のアプリがあります。
SGWorkPassアプリはこちら (MOMウェブサイト)
Ministry of Manpower Singapore
SGWorkPassCheck validity of Singapore work passes, long-term passes and Special Passes issued by MOM. Employers and workers can check AccessCode if workers can leave for ...