How QR Code Translation for Events Works

What happens on the speaker's side

The organizer or speaker starts a session on a phone connected to the internet. Whatever is said gets recognized on the spot, translated into the chosen language, and sent out to attendees' devices. The steps on this side are simple:

• Start the session, choosing the spoken language and the target language.
• Speak using the phone's built-in microphone, or an external mic connected to it.
• Display the QR code on a screen or a printed sign in the room.

The speaker just talks normally — there's generally no special phrasing or extra steps required for translation to work.

What happens on the attendee's side

The attendee side is even simpler. Scanning the QR code with a phone camera opens a dedicated page in the browser. After choosing a language, the attendee confirms audio output with earphones before listening. Translated audio and captions then appear together in the same listening surface. Audio can be paused after confirmation, but there is no separate caption-only mode that skips the audio-output check.

There's no app-store download and no name or email to register. The short path from scanning the code to actually being in the session is the defining feature of this approach.

Because everything runs in the browser, an attendee can also leave and rejoin freely — step out for a call, come back, scan again if needed — without losing a rented device or needing to check anything back in. That flexibility matters more than it sounds like at events where people drift in and out of the room.

What equipment is actually needed

QR code translation needs less equipment than approaches built around interpreter booths or dedicated receiver units.

There's no need to source receiver units or earbuds for every attendee — the venue side mostly just needs a way to display the QR code.

One detail worth planning for: attendees who want translated audio will need their own earbuds or headphones, since a shared speaker would talk over the room. If a chunk of your audience is likely to forget theirs, it's worth mentioning in the event invite or having a small stock of cheap earbuds on hand at check-in.

How it compares to renting receiver units

Traditional simultaneous interpretation setups typically hand attendees a dedicated receiver and earbuds. QR code translation — where attendees use their own phone, sometimes called BYOD — changes the operational picture in a few concrete ways.

Rented receivers hold up better against connectivity issues, but come with equipment costs and staffing. QR code translation trades that reliability for ease of setup, and depends on attendees' phones and network conditions. Which one fits depends on the venue size and the budget.

VoxFlight: starting with a QR code

VoxFlight is a live translation service for small in-person events built on exactly this model. An organizer starts a session on an iPhone with an internet connection and displays a QR code in the room. Attendees scan it in their phone's browser, choose a language, confirm audio output, and then receive translated audio and captions in the same listening surface. No app install, no account, for anyone in the room.

Pricing shown below is planned pricing ahead of general availability. Once paid purchase is available, the App Store processes payment when a session pass is purchased; the purchased pass is consumed when translation starts. The table compares complete one-language and complete two-language passes for the listed duration and listener limit; the two-language price is one total, not a per-language multiplier or add-on.

For two target languages, the complete two-language pass is purchased once in the App Store for the same duration and attendee limit. It is not an add-on after buying a one-language pass, and the total is shown before purchase.

VoxFlight is currently in pre-launch preparation. Prices above are planned pricing; Two-language passes are included in the planned launch pricing.

It isn't a fit for every situation, though. Medical or legal interpreting where errors aren't acceptable, large conferences with a dedicated interpreting team, and panel discussions where several people talk over each other are all better served by a traditional interpreting setup with equipment and staff. For a small talk or seminar that just wants an easy way to add another language, it's a practical option.

Frequently asked questions