If you weren’t aware previously, you definitely should realize that the signals wireless keyboards send are rather easy to intercept and crack.  The way they are encrypted allows a dictionary attack to break the code within the character limit for a Tweet.  In many cases that would only allow someone to know how often you circle strafe but can also be a major concern when it comes to passwords.  Another recently broken encryption is the one protecting wireless presenters, those handy devices used to move PowerPoint slides in corporate presentations forward.  A little gadget that is relatively easy to make and program will let you remap the keys on the presenter to something more interesting.  While Hack a Day suggests that a mapping of “[Win+R] Format C:” is certainly possible , there are many other amusing and less destructive commands you could choose to use.

“While hacking a wireless presenter doesn’t sound like something worthwhile or interesting, [Niels Teusink] demonstrates that these little devices often are a lot more powerful than we give them credit.

With an Arduino, plenty of research, and some heavy sniffing of a wireless presenter’s SPI and then wireless interface [Niels] is able to emulate an entire keyboard. Sending commands as harmless as “next slide” to the devastating “[Win+R] Format C:”. Hopefully anyone planning such a project at the next Apple or Microsoft keynote just intends some gentle fun.”

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