QR, RFID or BLE?
The right check-in for your event.
Most event planners have heard "it depends" one too many times. So here is a straight answer: QR is the right default for most conferences. RFID earns its hardware cost at high-volume doors. BLE does not scan at all — it tracks passively, and whether that distinction matters depends on three things: throughput, compliance and whether you also want footfall data.
Most events work fine with QR. RFID and BLE are built for two specific problems.
You want the most cost-effective, flexible check-in with a clean audit trail. The right default for most conferences, registration desks and session entry — including CME/CPD.
Speed at the door is critical — large sessions or trade-show entrances. Attendees tap or walk past, no phone needed. Worth the hardware for high-volume throughput.
You want zero-friction attendance data, footfall analytics and indoor navigation on one infrastructure. Not for credit-bearing sessions on its own.
QR vs RFID vs BLE, compared.
The same criteria event organisers actually weigh — without the sales spin.
| Criterion | QR code Cvent OnArrival |
RFID badge readers |
Passive BLE Crowd Connected |
|---|---|---|---|
| Attendee action | Show & scan code | Tap / walk past | None |
| Speed at the door | Moderate | Fastest | N/A — no door step |
| Hardware needed | Phone / tablet only | Readers + encoded badges | Beacons + BLE tags |
| Relative cost | Lowest | Highest | Medium (shared infra) |
| Verifiable audit trail | Yes | Yes | No |
| CME / CPD compliant | Yes | Yes | No (run alongside) |
| Footfall analytics | Check-in points only | Entry points only | Full venue heatmaps |
| Doubles as indoor nav | No | No | Yes — same beacons |
| Best for | Most conferences & desks | High-volume entrances | Multi-stream & analytics |
Not sure how to read this for your specific event? That is exactly the conversation we have with clients — and it usually takes ten minutes.
The honest case for each method.
QR code
The sensible default
An attendee shows a QR code from the event app or printed badge; staff or a self-service kiosk scans it. It is cheap, flexible and produces a clean, timestamped record that integrates with your registration platform.
Use it when
- → You want the lowest-cost option
- → You need a verifiable record (incl. CME/CPD)
- → You'd rather avoid door hardware
RFID
Speed at scale
Badge-embedded chips are read by hardware at room or hall entrances. Attendees tap or walk past — no phone, no app. It clears high-volume entrances faster than any scan-based method, at the cost of reader hardware and encoded badges.
Use it when
- → Hundreds arrive at once
- → Throughput at the door is the bottleneck
- → You still need a compliant record
Passive BLE
Zero friction
A small BLE tag on the lanyard is detected by beacons spread through each room. No scanning, no queues, no attendee action. The same infrastructure delivers footfall heatmaps and indoor navigation — but it infers presence rather than recording a deliberate check-in.
Use it when
- → You want data without friction
- → Footfall analytics matter
- → You also want indoor navigation
Our recommendation, by event type.
QR code at desks and sessions
For most multi-day corporate conferences, QR check-in at the registration desk plus session-entry scanning covers everything you need at the lowest cost — with a clean record for internal reporting.
RFID at the entrances, BLE for analytics
When thousands enter a hall at peak, RFID clears the doors fast. Add passive BLE across the floor for heatmaps and dwell-time data that sponsors and exhibitors actually value.
QR or RFID for credits, BLE alongside
CME and CPD credits need a verifiable per-person record, so the credit-bearing sessions run on QR or RFID. Passive BLE can run in parallel for footfall analytics and HCP movement insights.
Passive BLE across all rooms
With many parallel sessions, scanning each door needs a lot of staff. BLE covers every room on one deployment with no headcount per door — and powers indoor navigation in the same app.
We've deployed all three on the same event floor. Here is what that looks like.
We are not a single-platform reseller. On a recent congress we ran QR code check-in at the registration desks, RFID at the plenary entrance, and Crowd Connected BLE across the session rooms — because those were three different problems. We don't have a preferred answer going in.
Quite often the right answer is just QR. We'll say so, set it up, run the desks on the day, and hand you a clean attendance export at the end.
Talk through your eventEvent check-in methods — common questions
QR vs RFID vs BLE — which is best for event check-in?
There is no single best method — it depends on what you need. QR code check-in (e.g. Cvent OnArrival) is the most cost-effective and flexible, ideal for registration desks and session entry where a verifiable record matters. RFID badge scanning is fastest at high-volume entrances and works without a phone. Passive BLE tracking requires no attendee interaction at all and also powers indoor navigation and footfall analytics, but does not produce the individual audit trail required for CME/CPD credits. We assess your venue, attendee profile and compliance needs and recommend the right method — or a combination.
When should I use QR code check-in for an event?
QR code check-in is the right default for most conferences and corporate events. It is the most economical method, needs no hardware beyond a smartphone or tablet per station, integrates natively with registration platforms like Cvent and Idloom, and produces a clean timestamped attendance record. Use it for registration desks, session entry and any scenario where you need verifiable attendance — including CME and CPD credit tracking.
When does RFID make sense over QR codes?
RFID makes sense when speed at the door is critical — large sessions or trade show entrances where hundreds of people arrive at once. Attendees simply tap or walk past a reader without opening their phone, which removes the bottleneck of QR scanning. The trade-off is hardware: RFID requires readers at each entry point and encoded badges, so it carries higher cost and lead time. For high-throughput, high-volume events it is often worth it.
When should I use passive BLE tracking instead of scanning?
Passive BLE tracking is the right choice when you want attendance data without any friction — no scanning, no queues, no attendee action. Attendees wear a small BLE tag on their lanyard and beacons in each room detect them automatically. It is ideal for multi-stream congresses, footfall analytics and sponsor reporting, and the same beacon infrastructure can power indoor navigation. The one thing it does not do is produce the individually verifiable audit trail that CME/CPD accreditation requires — for those sessions, run QR or RFID alongside it.
Which check-in method is compliant for CME and CPD credits?
CME and CPD credits require a verifiable, timestamped, per-individual attendance record. QR code check-in (Cvent OnArrival) and RFID both meet this requirement. Passive BLE tracking does not, because it infers presence rather than recording a deliberate check-in event. For medical and scientific congresses we typically use QR or RFID for the credit-bearing sessions and can run BLE in parallel for footfall analytics.
How much do the different check-in methods cost?
QR code check-in is the most cost-effective — the main costs are platform licensing and staffing for the desks. RFID adds the cost of reader hardware at each entrance plus encoded badges, so it is the most hardware-heavy. Passive BLE sits in between: it requires beacon hardware in each room but no attendee-facing devices, and the cost per capability drops if you also use the beacons for indoor navigation. We give a clear cost breakdown per method as part of every project scope.
Can I combine different check-in methods at one event?
Yes, and it is common. A typical setup uses QR code check-in at the main registration desk, RFID at high-volume session entrances, and passive BLE for footfall analytics and indoor navigation across the venue. Because we are vendor-neutral and work with all three, we design the combination that fits your event rather than forcing everything through a single technology.
Do you only recommend tools you sell?
No. We are vendor-neutral. We work with Cvent, Idloom, EventMobi, Crowd Connected and others, and we recommend the method and platform that fit your event, team and budget — not the one that is easiest for us to sell. In many cases the right answer is the cheaper, simpler option. We earn trust by being honest about trade-offs.
Go deeper
The services behind each method — and the team that runs them on-site.