Twitter co-founder Jack Dorsey is launching a new messaging app that he claims needs no internet or phone numbers. It’s an apparent play on the entrepreneur’s fondness for decentralized technology. On Sunday,

Dorsey admitted that his new messaging app had not been reviewed or tested for security issues prior to its launch.

What has Jack Dorsey, the founder of Twitter (now X) been up to lately? Among other things, creating experimental little projects, like a new private messenger that doesn’t need the internet to function.