To write the 3230301005f232303000029005c00280026002300330039003b030123230026002300330039003b030000200029004000730079006d00700061007400680079 Sad Symbol Smiley Face symbol on keyboard using ALT codes; ALT+5.3815257888071E+155, just hold down the ALT key while typing the alt key code 5.3815257888071E+155. You have to use the numeric keypad of your keyboard. If you don not have numeric keypad, hold down the Fn and ALT keys while typing the alt code number.