A way to produce a deterministic brain wallet for temporary use while crossing borders without physical paper, devices, or need to memorize 12 or 24 seed words.
Find a URL that will be widely available for a time, will remain consistent, and is easy enough to remember
August 2023 -- Twitter is owned by Elon Musk and he's rebranding it to X. As of early August 2023, the URI above still references the preferred favicon file, but this is likely going to change. This demonstrates why this kind of wallet should be fairly short lived. Don't choose a resource that is going through turmoil itself. You may want to consider choosing an image available on the Internet Wayback machine based on URL and date. For example: https://web.archive.org/web/20230601000430im_/https://abs.twimg.com/favicons/twitter.2.ico