Here are Singapore hotels that explicitly offer express / contactless / mobile check‑in and/or express check‑out — good picks for business travellers. I’ve noted the key feature (mobile app, digital key, self check‑in kiosk or “express check‑out”) plus why each suits a business visit.

• Marina Bay Sands — mobile app with Smart Hotel features: mobile check‑in, digital key for rooms & lifts, instant (in‑app) check‑out. Great if you want to skip the lobby and get straight to the room. (marinabaysands.com)

• Conrad Centennial (Hilton group) — supports digital check‑in and Digital Key via the Hilton Honors app (choose room, mobile key when room is ready); express / contactless check‑out also available. Centrally located for the CBD. (stories.hilton.com)

• Hilton Singapore Orchard — Hilton Honors mobile check‑in/mobile key available (pick room, unlock with phone) and app‑based checkout — convenient for quick arrivals/departures. (stories.hilton.com)

• Pan Pacific Singapore — large CBD hotel that offers contactless / express check‑in and express check‑out options (pre‑registration/contactless options shown on hotel booking pages). Good for meetings near Marina Bay. (panpacific.com)

• Swissôtel The Stamford — lists express / self‑serve check‑in options and express check‑out on its booking/property pages; well positioned for business in the city. (hotels.com)

• PARKROYAL COLLECTION Pickering (Pan Pacific group) — contactless / contactless check‑out and business‑friendly location (near Chinatown/Clarke Quay & CBD). (hotels.com)

• citizenM (Singapore) — app and kiosk‑driven self check‑in with online/app options (fast, no‑frills, ideal for time‑pressed business travellers); easy early/online check‑in via citizenM app. (citizenm.com)

• The Fullerton Hotel / Fullerton Bay Hotel — traditional luxury options that also advertise express check‑out and business services (business centre/meeting rooms) on their booking/property pages. Good for corporate visitors who want heritage luxury plus efficient departure. (expedia.com)

• Marriott properties (e.g., Singapore Marriott Tang Plaza, JW Marriott South Beach) — advertise Digital Check‑In and Mobile Key via the Marriott Bonvoy app and contactless/express checkout options; useful if you use Marriott’s app or corporate rates. (marriott.com)

Quick tips for business travellers

• Join the hotel’s loyalty app (Hilton Honors, Marriott Bonvoy, MBS app, citizenM) and complete any pre‑arrival registration/ID verification — that’s usually required to receive the mobile key and skip the front desk. (stories.hilton.com)
• Mobile/digital check‑in availability can depend on room readiness, rate type (some prepaid or corporate blocks limit mobile keys) and first‑time identity verification — if you must have immediate room access, confirm with the hotel before arrival. (panpacific.com)
• For smooth express check‑out, review and approve your bill in the app before departure (or use express check‑out kiosks/boxes where provided). (marinabaysands.com)

If you’d like, I can:

• Narrow options by area (Orchard / Marina Bay / CBD / Sentosa) or budget (premium, upper‑upscale, midscale), or
• Check live availability and whether mobile check‑in is active for specific dates at 2–3 hotels you pick.