On 15 Apr 2013 12:17, "Maninder Obhrai" <<a href="mailto:maninder.obhrai@gamesys.co.uk">maninder.obhrai@gamesys.co.uk</a>> wrote: > We'd like to be able to tell whether a chat user in a room is on a mobile device or a desktop device and we're trying to work out the best way to do this. Our current plan involves making the client set the device type (mobile/desktop) as part of the resource, and then exposing full JIDs to all users. The client we've written can then parse this and show an icon next to chat messages. We looked at PEP and it seems a little over the top, and we didn't want to hack stuff into the presence status. As Kev says, a disco#info request will give you the device type. PEP won't work very smoothly because it works on a user-level, so you'd have to stick a per-resource level over the top, somehow. Hacking stuff into the presence stanza *will* work, and would be reasonable if it weren't for disco#info already giving you that information. As it is, XEP-0115 will allow you to hash the device type into the presence stanza, and you can hardcode those hashes (ie, pre-fill the cache) to avoid any lookup at all. However, if you really want this to be per-message, and not per-occupant, you're going to need to put the information (probably a XEP-0115 caps element) into the message stanza. Whether or not this makes sense really depends on whether you have nick-sharing going on or not, and whether you want to spend the extra bandwidth. Dave.