A student ID card is more than proof of enrollment—it unlocks access to campus facilities like libraries, labs, gyms, housing, and meal plans, while also helping students get discounts from popular brands and travel providers like StudentUniverse or local transport services; it’s commonly used for cheaper cinema and museum tickets, student bank accounts, software subscriptions, online learning platforms, and career events, with some international IDs (like ISIC) offering global recognition and perks even beyond graduation.