I’m seeking information about the TL parameter found in Google account signup URLs. For example, in the following URL:
https://accounts.google.com/signup/v2/idvbyphone?TL=AC3PFD6-WtS06OH8_-wAQ24DcqJe9gw_JOF9NDPTfvSF07xgEpI3BrgayC29nRp3&continue=https%3A%2F%2Fmail.google.com%2Fmail%2F&ddm=0&dsh=S-922261782%3A1717270103078506&flowEntry=SignUp&flowName=GlifWebSignIn&hl=en&service=mail&theme=glif
<code>TL=AC3PFD6-WtS06OH8_-wAQ24DcqJe9gw_JOF9NDPTfvSF07xgEpI3BrgayC29nRp3
</code>
<code>TL=AC3PFD6-WtS06OH8_-wAQ24DcqJe9gw_JOF9NDPTfvSF07xgEpI3BrgayC29nRp3
</code>
TL=AC3PFD6-WtS06OH8_-wAQ24DcqJe9gw_JOF9NDPTfvSF07xgEpI3BrgayC29nRp3
What does the TL parameter stand for and what information does it contain?
How is this parameter generated?
Why does altering its value invalidate the session?