Pro tip for if you need to scratch out sensitive penned down text: don’t scratch it out, it’ll still be readable. Instead write other similar numbers and letters over it. Have a 9? Write a p over it, then use the circle for the bottom of an 8, then write a B over the p… it’ll be impossible to discern what the original letter or number was. Do this for all letters and you’re good.
Pro tip for if you need to scratch out sensitive penned down text: don’t scratch it out, it’ll still be readable. Instead write other similar numbers and letters over it. Have a 9? Write a p over it, then use the circle for the bottom of an 8, then write a B over the p… it’ll be impossible to discern what the original letter or number was. Do this for all letters and you’re good.
TIL dban exists for physical media.