A while ago I worked with a mentalist and they did a “psychometry” sort of routine where they matched things with the object’s owner. To do that the objects were put in bags then mixed up before the mentalist returned them to the proper owner. This mentalist (and many others that I’ve seen) put glasses on to do the part where they needed to read the marks and removed them after they read the marks.
DON’T DO THAT!
Sure probably 90% of audiences won’t notice that or make the connection, however many do. It’s like casually looking at an Apple Watch to get information, people notice. A friend of mine who isn’t a magician, but books big events had a mentalist and I asked how they were. My friends response was, “they looked at their watch a lot” and that told me all I needed to know.
Audiences do notice these things. Can you come up with a different way of making the prop?
Sew beads into it’s marked by feel?
Or use something that’s easier to see?
Can you wear glasses your whole show?
Think outside of the prop you bought that will work better with your eyesight!
-Louie