… if you don’t tell us who you are?
The message in the photo appeared on the screen of “a” unnknown friend’s laptop while surfing the net at “a” unknown eating establishment in Beijing.
Some context: Here’s an example of what usually happens. In order to use the free WiFi at Starbucks in Beijing, I have to type my mobile phone number on the Starbucks WiFi page and then Starbucks texts me a WiFi code to use. At that point, both the user (me) and the location (Starbucks) are “a” known.