pid.codes 的說明就很清楚了：「Welcome to pid.codes」。
由於 USB-IF 對每個 vendor 收 USD$5000，而且不可以跟其他單位共用：
If you’re a maker, hobbyist, or startup company producing your own USB device, you’ve probably discovered that you need a USB Vendor ID and Product ID to uniquely identify your device to computers. The USB-IF’s position is that the only way to do this is for each organisation to pay $5000 for a unique Vendor ID, which they may not share with other individuals or organisations.
所以就造成很多人惡搞 Vendor ID 與 Product ID：
For many makers and small companies, this is a prohibitive amount of money, and forces them to resort to workarounds, such as using other organisations' VIDs without permission, or simply making up a VID and PID. These solutions make things worse for everyone, by damaging the assumption that a VID/PID combination is unique to a given device.
而他們尋求解決方案，取得了一份在 USB-IF 禁止共用前的 Vendor ID，從而解決這個問題：
pid.codes seeks to solve this issue for anyone producing open-source hardware. We have been gifted a Vendor ID by a company that was issued one by USB-IF and has since ceased trading; they obtained the Vendor ID before the USB-IF changed their licensing terms to prohibit transfers or subassignments.