i often use the 'me' channel in slack, but not every device has that. similarly, between myself on apple devices, I might use 'notes' - which is fine (and long lasting) but I like this approach.
i do share the other stated concern about security. offering '5 minute sessions' and/or a way to 'approve' another device connecting would alleviate some concerns about a random unknown connection happening.
i often use the 'me' channel in slack, but not every device has that. similarly, between myself on apple devices, I might use 'notes' - which is fine (and long lasting) but I like this approach.
i do share the other stated concern about security. offering '5 minute sessions' and/or a way to 'approve' another device connecting would alleviate some concerns about a random unknown connection happening.