selenium ...

selenium

copy tracking pixels ...

tracking beacons ...

picutre element

rgb

image that is a single pixel in size ... clear .... no impact on display
but has a unique name ... when people access...only gave this one person who did this advertisement...

encode secret messages into ....

read content with selenium

python....easy to learn and use...
lots of packages...

application program language...build functionality ...

algorithmetically intenesev  bad

quickly get apps running...python...

selenium....

Android / iPhone
Java or Swift...

write once ... generate code for each ...


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