Not a situation I've been in, but at the least some form of uncontrovertible ID (driving license, passport - obvs check it's actually them!) and preferably something of worth too, like a fancy iphone. But the more important thing would be being able to track them down/report to police. Perhaps, if being very cautious, take a photo of them+bike before they set off?
Not a situation I've been in, but at the least some form of uncontrovertible ID (driving license, passport - obvs check it's actually them!) and preferably something of worth too, like a fancy iphone. But the more important thing would be being able to track them down/report to police. Perhaps, if being very cautious, take a photo of them+bike before they set off?