Japan and the USA, I'm pretty sure.
And this system would only catch nationals of the country in question being fingerprinted upon re-entering that country.
http://www.japantoday.com/category/national/view/deported-s-...
This woman snuck back in a few times after being deported by using "special tape." I really wonder how special the tape is. On the other hand:
846 foreign nationals were refused entry
So, I doubt they will ever get rid of the program.
There's some blister plasters that are very thin and transparent.
Herpes plasters for around the mouth are quite hard to spot (though with a picture as blurry as in this article you would expect them to be): http://www.primped.com.au/blogs/zoes-blog/if-you-get-cold-so...
Japan and the USA, I'm pretty sure.
And this system would only catch nationals of the country in question being fingerprinted upon re-entering that country.