Hi I made an open source Android App that allows to charge bitcoin in person. It connects to lightning backends such as BTCPay or LNBits, but it also connects to any lightning API, so for example users can send bitcoin straight into their accounts, or to their nodes of course.. I know is not ideal to use exchanges but I saw interest, so it can onboard new merchants willing to offer BTC. So far I have integrated the APIs of Buda (Latin america) and Bitaroo (Australia). links: Github: https://github.com/felipebrunet/icriptopos Play store: https://play.google.com/store/apps/details?id=cl.icripto.icriptopos

If you know any exchange that have lightning deposits via an API, please let me know so I can contact them.

cheers