You can download a page and edit the code so that instead of 0, it shows 10 bitcoins but it's only a visual thing. The site he has on his computer does not connect to the PD server to take real data from there. You can edit what you see on your browser.


It's an old trick scammers from India used years ago. They'd call you and ask you to open your bank account on shared desktop. Then they'd edit the browser code of your last transaction so that it would show as if you got some money from them. It works only as long as you don't refresh the page. Old people would think they really got some money and the scammers would ask them to buy a subscription from them or get them a gift card and those people would do it thinking they got 1000 dollars from the scammer so they can safely send them $500 and still have profit.