Presence technology is an application of instant messaging( IM) and determines the communication status of the communication partner. The classic presence technology determines the various communication devices and services and the service under which the communication partner can be reached.
The further development of presence technology takes Rich Presence Technology (RPT) into account. It can be used to determine whether the communication partner is currently online and where he or she is located. Participants in the RPT service can also inform their communication partners whether they are using a stationary device or a mobile device. Also about the operating system used and the local time. Personal messages can be sent via the system and privacy can be agreed upon. This protects confidential user data - health records, bank details, tax returns, etc. - are protected.