Tablets, cookies and multiple accounts

[Guido]

I generally use tablets these days, not even sure where the laptop is anymore! Can I use tablet to set up several different accounts? I have iPad and an android if that makes a difference.. I have neither eBay or PayPal apps in them anymore. Could I use a browser and just delete the cookies / history each time? Any recommend browsers? Can use phone as hotspo and change up each time. Just not sure what info eBay PayPal gets from tablet
Thanks