Consider cellular detection technology for particularly sensitive areas such as executive suites. Educate and remind employees about your company’s policy on cameras and other audiovisual equipment. Enlist their help to report violations of the policy. Ensure that employees who should not have camera phones are not buying or being provided with those devices. The company should also ensure that its camera policy protects employee privacy as well as corporate assets. It also protects the privacy of employees and the corporate assets of the company when it comes to security.”]
Source: https://www.csoonline.com/article/2118501/security-measures-for-camera-phones.html