The Brief Hinsdale police say hidden cameras were used to record at least 60 spa clients without their knowledge. A suburban Chicago spa owner is facing felony charges after prosecutors say he secretly recorded clients using hidden cameras. Hinsdale Village President Greg Hart said once the allegations came to light, the village did not renew the spa’s business license, which expired last month. What they're saying:Cybercrime expert Detective Rich Wistocki also weighed in, offering advice on how to spot hidden cameras in private spaces. Wistocki said there is also handheld equipment available for purchase online that can help detect hidden cameras and listening devices.