To write the Rightwards Harpoon With Barb Downwards symbol ⇁ on keyboard using ALT codes; ALT+8641, just hold down the ALT key while typing the alt key code 8641. 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. 𝓀