Nonetheless, customers can voluntarily surrender the privateness of their cash if they need legislation enforcement to hint stolen funds. For this, a consumer would wish to disclose his distinctive cryptographic key to, say, the police, after which the police can see when these stolen cash are being spent at a restaurant, a retailer or different form of service provider, as a result of retailers, in contrast to particular person customers, could be identified to the system. So the police would be capable to discover the place that service provider is, go there and arrest the thieves, Chaum stated.