PlateWave is a free web platform and app that transforms any licence plate into a virtual mailbox. The concept is the brainchild of Emmanuel, a web developer from Luxembourg who first had the idea fifteen years ago, following a skiing accident which left him housebound.
The premise is simple: to give any road user a means of sending a message to any vehicle owner using nothing more than their licence plate. The reasons for doing so can vary widely, from lodging a complaint or issuing a warning about a technical fault such as a broken tail light, to simply saying thank you.
The process is straightforward. Users enter the licence plate of the vehicle they wish to contact, write their message, and the app’s AI will rephrase it to ensure it is courteous, constructive and respectful before it is sent. The vehicle owner is then notified.
Emmanuel, the app’s creator, is originally from Hesperange and has lived in Brussels for several years. Including Luxembourg in the project was, for him, an obvious decision. He grew up in the Grand Duchy and has known the road between Luxembourg and Brussels for years. Luxembourgish, he explained, was never an afterthought or a translation add-on, but a native language built into the platform from the very beginning. Since its launch, PlateWave has been available in four languages: French, English, Dutch and Luxembourgish.
PlateWave was designed as a genuine communication tool, not as another place where commuters can let out their road rage. This is why every message is moderated by artificial intelligence. The AI rephrases each message without altering its factual content. A message dictated in anger, such as “Idiot, you cut me off”, would be transformed into something along the lines of: “Hello, by turning without signalling, you put me in danger. Please be mindful of that.”
Since its launch, PlateWave has prompted questions about its legal standing. Whether associating a licence plate with a message is permissible is a question Emmanuel answers clearly in the affirmative. A licence plate is public data, visible to anyone on a public road, and its processing falls under legitimate interest as defined by Article 6.1.f of the GDPR, the same legal basis that underpins directories, reporting systems and navigation applications.
Importantly, PlateWave does not collect any personal data on vehicle owners. No names, addresses or links to vehicle registration records are stored. Only registered users who send messages share an email address, used solely for authentication purposes.
Every vehicle owner also retains the right to object under Article 21 of the GDPR and may request that their licence plate be blocked at any time by contacting optout@platewave.be. The request is free of charge and processed without delay.
