I was building a web service that works in a browser where a user scans an NFC tag containing information to post to Nostr with predefined attributes and hashtags are one of those atributes. The main reason I started this project was to enable anonymous posting to Nostr using random keys—allowing users to leave reviews for services, products, locations, or simply post predefined messages. It's still a work in progress, and to be honest, it's been stagnating for over a month, but this post has motivated me to finish and publish it as soon as possible. It will be live at ntagstr.com someday 🤣