Consider that the message is the word "HI", which we first transform to hexadecimal (hex) notation.
There was nothing shy about the use of powers in this house; the hex was right in the open, painted above the door.
This is the code page for the National Language Group in hex.
This is a hexed situation We walk away while we're still ahead We took a licking and kept on ticking.
His life seems hexed.
She put a hex on her old boyfriend's new girlfriend.
All of the spells and unlimited hexing included.
And we're going to the Hex Rally.
Appear we have a little problem, Mr. Hex.
Conversion from text to hex code and vice versa.