The idea of USB Condom is to protect your data from attacks at public locations that offer USB charging stations. A hacker can easily modify a USB charging station to attack your data.
USBCondoms prevent accidental data exchange by cutting off the data pins in the USB cable and allowing only power pins to connect through. USBCondom prevents data being stolen by only allowing charging to go through the USB. USBCondom is currently crowdfunding it’s project on CrowdSupply with a $10 pledge gets you one USBCondom. Check out the project HERE