Signal's new(ish) URI Scheme
A few years ago, I idly wondered "Whatever happened to URI Schemes?". Older communications protocols didn't rely on http. You can use mailto:me@example.com to send email, sms:+447700900123 to send a text message, and skype:terence.eden to use Skype. There are dozens of these sorts of protocols. But modern apps seem to prefer making everything an https: link. That way, if the user doesn't have the app installed on their phone, they get taken to a friendly landing page - rather than seeing an…
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