marking memory sticks

[brian parker]

Hi list, this may seem a strange question, but?  i am having trouble 
marking memory sticks. some of them have a suitable surface on which 
to write a braile number. unfortunately some of the ones i have, have 
a sort of stippled surface, on which it is impossible to write 
anything. have any of you had this problem, and what did you do about 
it, apart from using bad language. brian.