This app is hosted with CloudFlare Pages on bumpshare.pages.dev
- Have at least 2 mobile devices on the page simultaneously
- On one or more of the devices, press the 'Upload' button at the bottom of the page and choose the image that you want to transfer
- Place all of the devices stably on a table with the screen facing up, making sure that all devices show a green background
- Knock insistently on the table two times in brief succession
- The selected image(s) should now show up on all devices except the one it was uploaded from