I don't understand how targeted ads on Grindr can be used to get peoples locations.
Does the ad auction tell the users current location? Does grindr let you run your own auction bidder on your own machine?
Does the ad auction tell the users current location? Does grindr let you run your own auction bidder on your own machine?
Tiktok was used to find and track/monitor Chinese dissident whereabouts a few years ago by the CCP in Hong Kong.
after that they all added targeting by weather (latest fine grained targeting under gdpr) and BT beacon tracking.
fun fact, google uses BT on your phone to mark of you entered a store after seeing an ad for it to get paid for the "conversion".
You can also target ads by geography and do a lat/long box over your target area and show a specific ad so you know how many unique users are in that area.
would you like to know more?
see also: https://www.jstor.org/stable/27862533
Baryshnikov & Ghrist, Target Enumeration Via Euler Characteristic Integrals (2009)
> We solve the problem of counting the total number of observable targets (e.g., persons, vehicles, landmarks) in a region using local counts performed by a network of sensors, each of which measures the number of targets nearby but neither their identities nor any positional information. We formulate and solve several such problems based on the types of sensors and mobility of the targets.