Etchv vs. Opposable

Add an invisible watermark to images, PDFs and video, then detect it to see which copy was shared. Forensic watermarking API with a free trial. Hello HN!The inspiration for Etchv came directly from friends who raised concerns about the growing ease of unauthorized media copying without attribution. To address this, Etchv embeds an invisible watermark inside images, PDFs, or short videos that survives modifications like screenshots, format changes, and file compression.You can try it on our homepage without signing up. There's also a live demo where a watermarked PDF page gets screenshotted and the watermark ID is still successfully recovered: https://etchv.com/demo/traceInstead of training a model from scratch...

Opposable is computer use for phones. Claude Code, Codex or an on-device model can see, tap and type across every app on a real Android phone, yours or one in our cloud. hey! we built Opposable (named because it gives your AI thumbs to use a smartphone) to bring the computer use revolution to smartphones in a easy-to-use and not too hacky way. most of our life is already on our phones, this enables you to do a lot of things while the phone is in your back pocket.some things /are/ hacks, like using a flashable bluetooth dongle to play as a keyboard+mouse to control iPhones.. but it works!