**EDIT:** Never mind, I have decided on dice-like digits.
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Someone I know frequently has headaches which are worsened by light. Audio books get boring so to have some distraction, I am trying to convert an existing card game into one that can be played in the dark.
Then I thought, if I make and engrave one set with a laser cutter, I might as well make multiple sets and give a few away to people who are visually impaired or blind.
While designing this, I ran into some design decisions. I can google it all, but many articles skew towards personal preferences, or some document might mention some country's official standards but not what is actually in use. So I want to ask people here to get a better impression of how I should make it.
Question 1: Can I use dice-like numbers (so one dot for the number 1, two dots for the number 2, three dots for the number 3, etc.), or is that harder to feel than Braille? For compatibility with sighted people, dice-like numbers might be a better choice. What do you think?
Question 2: Is it an issue that my "dots" will actually be holes? The laser cutter will engrave the numbers, not emboss them.
Question 3: there seem to be multiple number systems in use. How widespread is the normal/standard/traditional way, where the number sign is ⠼ and a is 1, b is 2, etc.?
Thank you!