When searching for any search word or phrase in Duckduckgo, using the additional term “mirror”, the search phrase will be displayed upside down.
Example: “mirror hello world” will display the output “plɹoʍ ollǝɥ”.
I further think that this is a pretty neat way to send sensitive information (e.g. passwords) to people who are not using encryption technologies… 😎
˙˙˙sıɥʇ pɐǝɹ oʇ ǝlqɐ ǝq ʇ,uoʍ ɐsu ǝɥʇ ɟo sǝuıƃuǝ ǝɥʇ ʎlqɐqoɹd ʇsoɯ