Deletion of Push Notification

Comment: There is sufficient coverage of this topic as well as ongoing academic discussion of various push notification systems and technologies (https://scholar.google.com/scholar?hl=en&q=push+notification&as_sdt=1%2C21&as_sdtp=&oq=%22Push+not GScholar results) which can be used as a basis for this article. High beam shows lots of ongoing research and patents so sources on the basic/general techinolgy are very likely to exist per .  Should not be merged because Notification service seems to include not only push technology but things like Reverse 911 and EMWIN
Stance: keep
Cited policy: Wikipedia:Notability (WP:NEXIST)