Stemoscope is designed from hardware to software to protect your data and privacy. Firstly, there is a physical switch on Stemoscope. When it is switched off, the power supply is cuff off physically and there is no opportunity for the Stemoscope to sense sounds when it is off. Secondly, the data transfer between a Stemoscope and your phone is encrypted. Thirdly, the data are saved in your phone or pad and you have full control on your audio data. It is similar to those photos you take and you have full control on them.