[quote=@Prince of Seraphs]
[@harinezumikouken] How much of his tattoos would someone need to see in order to get some solid information?
[/quote]

At least one solid, clear look at one of the two on his left forearm, or see his entire right forearm. 

By the by, for anyone curious. If you want to know if your character is on the secret list, you can PM. Do understand however, that I will only reply with a 'Yes' or 'No' and will not give reasoning as to why your character has an informational advantage. You'd be surprised who I have on the list too.