Trending @Capgemini; swipe from the different location

Yes you can

i have access to two locations one is chennai and other one is Trichy , i swipe at two locations it counts as okay...but you have to get a approval mail from your manager

I had raised a similar request in the past from two of my line managers around this but swiping from a different city which is not your base location isn't allowed.l as per policy. Because your billing is generated from the base location city and its centers only. However, if you've a client base in the city you want to login then you would require approval from the client side to login stating your manager that their approval is there to switch cities. These exceptions will then be considered by HR team as well while calculating your WFO days.

You access card won't work I guess. When I was in Bangalore but had pune access. That's the problem I faced.

I think you need to take prior approval for that. It may not work or count on your attendance.