Watermarking began in Italy in the 13th century when papermakers used these marks to identify their handiwork. Digital watermarks are an emerging concept, but don’t let the name fool you. It’s not used for authenticating documents, but that’s the job of digital signatures. Graphic designers can easily embed, detect and read the watermarks by using Digimarc plug-ins bundled with image-editing applications such as Photoshop. The ImageBridge watermark makes it easy for law-abiding people to follow copyright rules.”]
Source: https://www.csoonline.com/article/2117187/digital-watermarks–what-hides-within.html