Jackson sold his ID to an Australian gambling syndicate. He is now discovering what has been done in his name

Long after mailing his bank cards to a post office box, Jackson discovered the syndicate had created email addresses in his name, without his knowledge, to run the accounts. Composite: Guardian design/Alamy

There is an unassuming suburban post office locker that is managed by a gambling syndicate accused of exploiting desperate young men.

For several years, these men have sent their signed bank cards there in return for $1,000. By doing so, they have risked identity theft, fraud and possible criminal conviction.