Glympse

the act of rubbing the ear of a domesticated canine or feline between the index and middle fingers at the middle knuckles

It is ill-advised to glympse the ear of a feral cat as you may succumb to grave injury and dismemberment.

Glympse stalking

Checking on the GPS location of a person after they have enabled the Glympse tracking app on their smartphone.

I see that you stopped at the grocery store before coming home because I was Glympse stalking you.