Singapore's police report process recently made headlines after reports of a man allegedly trailing female students, and it turns out plenty of travellers and residents aren't sure which channel to use when something feels off. The Smart Local has pulled together a practical rundown of the Singapore Police Force's (SPF) options, and the short answer is: not everything needs the same report.

Emergencies go through 999, the direct emergency line. If speaking out loud would give away your position, there's an SMS alternative at 70999 — send your location and a brief description, and an operator may text back before dispatching help. SPF is clear that texting is only for situations where calling is unsafe; otherwise, phone it in.

For non-urgent incidents like theft or scams, the Police Report e-service handles things online, takes roughly 30 minutes, and lets you attach up to five files (10MB each) such as photos, screenshots or documents. Once submitted, you receive a report number and the Officer-in-Charge's details electronically. If you've merely lost something rather than had it stolen, there's a separate Lost Property Report e-service — and losing an NRIC or passport doesn't need a police report at all, just a replacement via the Immigration & Checkpoints Authority.

The more interesting channel is I-Witness, SPF's e-service for reporting suspicious behaviour when you can't tell if a crime has happened. Submissions can be anonymous, though you won't get outcome updates. It's for tips and observations, not for reporting crimes against yourself — that's what the standard report is for. Witnesses can also call the Police Hotline on 1800-255-0000.

A few legal nuances are worth knowing. Following someone repeatedly can amount to unlawful stalking under the Protection from Harassment Act (POHA), whereas a stranger walking behind you briefly generally doesn't. Filming in public isn't automatically illegal either, but secretly recording someone in a private act — upskirt photos, filming inside toilet cubicles — is voyeurism. Traffic accidents have their own process: a Traffic Accident Report is mandatory for fatalities, hit-and-runs, incidents involving pedestrians, cyclists or foreign vehicles, or when someone needs hospital treatment or three-plus days of medical leave. Otherwise, exchange details and inform your insurer within 24 hours. Missing persons should be reported in person at a Neighbourhood Police Centre or via 999, bringing ID and a recent photo of the person. Scam victims should file online, contact their bank immediately, and can call the 24/7 ScamShield helpline on 1799 for advice.

If you'd rather go in person, note the difference between Neighbourhood Police Centres (most open 24 hours, staffed) and Neighbourhood Police Posts (some now kiosk-only). Check SPF's Police Station Directory before travelling, since some centres — including Serangoon and Woodleigh NPCs — are kiosk-only despite the name. Whatever you report, SPF advises documenting date, time, location, descriptions and any vehicle registration numbers or CCTV locations — but never put yourself at risk to gather evidence.

Why it matters for travellers: knowing that scam reports, lost passports, anonymous tips and genuine emergencies each have a dedicated channel can save serious time and stress if something goes wrong mid-trip.