Hi, So currently we have XEP-0012 which we don't like because of the relative time semantic, it uses. In addition that it is currently used for two different purposes: 1. Discover the time a disconnected user last accessed its account (i.e. was online). 2. Discover when a connected user was last active at the server. (The XEP calls it idle time, which would be some kind of server access idle time if i read it right)
Note: XEP-0256 seems to do the same as 2) but using presence. I suggest we deprecate XEP-0012 and XEP-0256. Purpose 1) can be done using presence + delayed delivery, like described at http://tools.ietf.org/html/rfc6121#page-54. This would automatically use absolute time. Don't think 2) is the semantic we ever wanted. Under idle time I understand the time someone has been away from his machine/device. The most common way to detect this is missing input (keyboard/mouse/touch). In my opinion neither XEP-0012 nor XEP-0256 describe such behavior. That's why I propose to use a new protocol, like this https://dl.dropbox.com/u/14672346/xmpp/extensions/xep-0256-replace.html . Not to forget the suggested security notice, suggested by Matt, to Date and Time Profiles on possible geo privacy leak. Opinions? Feedback? Cheers, Tobi
