olemus
sidetehnoloogia haru, mis võimaldab võrgus saada
kohaloluteavet
= a branch of communication technology enabling the retrieval of presence information on a network

ülevaateid
https://www.thetechedvocate.org/what-is-presence-technology/

https://www.go-rbcs.com/articles/presence-technologies

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.638.7927&rep=rep1&type=pdf

https://www.thedigitaltransformationpeople.com/channels/cyber-security/physical-presence-technology-a-complete-explanation/