Platform for Privacy Preferences or P3P is a protocol allowing websites to declare their intended use of private data collected from the web browser.

Developed by the World Wide Web Consortium (W3C), Platform for Privacy Preferences acts as a safety net against controversial practices from merchants.

So, why is it useful exactly?

• Websites implementing such policies enjoy higher levels of trust from users
• It helps users understand the privacy policies of the website before disclosing their private information