Cloo
Banana for scale
I don't give a toss if they know where I'm going and neither does 'The Man'. There's all sorts of ways of knowing where I am if 'The Man' is that bloody interested in me, so unless you're going to live in some paranoid communication and credit/bank account etc free existence just chill out - you're not that interesting, I'm afraid. 
As for Oyster, another reason they're keen to get onto them is presumably stopping touts. If you need the card to travel, you can't give it away, innit?

As for Oyster, another reason they're keen to get onto them is presumably stopping touts. If you need the card to travel, you can't give it away, innit?
