Imagine you’re at a club, and you are chatting up this beautiful creature who you fear might just be humoring you. You keep asking her for her number, and finally she relents, but you find it strange that she reaches for her phone. After tapping on the screen for a few seconds, she says she has a game for you, and if you “win” her number will be revealed. She asks if you have a piece of paper so she can give you her number, to which you whip out the requisite tools and await her number.
00 84 5F ED
That’s what she gives you. At first you don’t get it, but then you realize you have seen those numbers before—something called “Hex numbers.” And of course you’re intrigued at this since you fancy yourself as a bit of a geek. So you set out to solve the puzzle.
Now of course you know how to convert the HEX to DEC by hand. For those who do not, XDA Senior Member KobiP created his HDBHelper application just for you. HDBHelper allows you to display (and calculate) in HEX, DEC and BIN. So you can easily enter in the HEX code the woman gave you into the application, and receive the corresponding entry in DEC or BIN. Here’s what you would get with the BIN conversion:
00000000 10000100 01011111 11101101
Even though that doesn’t look like that much help, and reminds you of The Matrix, you decide to see what the DEC conversion gets you, and BINGO! You’ve found it: