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Would something like Grafana fill the bill? It's a dashboard construction set with a decent set of plug-ins for different widgets, data sources, databases and so forth.


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For contactless applications RFID is what you are looking for. As for the payment side of things: deploying a payment system from scratch is no small project. If I were you I would get in touch with card issuers that have experience with cobranding (look up this keyword). The idea is to have a normal payment card with your logo, that will have a chip (very ...


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It sounds indeed like RFID/NFC is what you are looking for. Some introductory read here, although it only scratches the surface. In short, there are different types of RFID chips, some of which can be passkey-protected and some others not. Generally they store only little data (a few kB), but you can usually store data for several different applications on ...


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