The Fame Checker has a simple design. It is dark red and has a screen roughly the size of the Pokédex screen. It has four black circular buttons on the left side, and on the right side it has a Poké Ball-shaped button or wheel split into three different portions.
In the games
The Fame Checker user interface
Each time a predetermined piece of data is revealed to the player about a famous person listed within the Fame Checker (through mediums such as Pokémon Journal), it will be recorded. This information is arranged into categories, first by character, then in subcategories in an attempt to give a more or less whole perspective of the character in question (e.g. "Favorite kind of Pokémon", "Friends and Family", etc.). The player can observe these pieces of information at their will at any time. In numerous cases, these information pieces have requirements that must be fulfilled first to acquire that particular quote (ex. post-Elite Four). Once all six data pieces are obtained in a person's section, a message directly from that person will be obtained.
Though interactive, the Fame Checker does not affect to the story or playability of the game, but is apparently intended to be useful to those who are interested.
The characters who have information stored in the Fame Checker in Generation III are as follows:
The Fame Checker appears in the FireRed & LeafGreen chapter of Pokémon Adventures. It serves a slightly different purpose of recording and storing voice messages. Red and Blue return to Oak's lab at the start of the arc and come across two Fame Checkers meant for them. A message recorded onto the Fame Checkers from Professor Oak tells the two Pokédex holders to deposit their Pokédexes in an item transfer machine and head to the Sevii Islands with the Tri-Pass issued to them. This was in fact the Team Rocket member Orm forcing Oak to take the Pokédexes from them for the evil organization's benefits. Oak had recorded the entire conversation between himself and his kidnapper on the Fame Checker meant for Green. A while later, Green used the recording on her Fame Checker to reveal the truth to Red, who had been dispirited after his defeat to Deoxys.
In Koga's Fame Checker entries, his daughter Janine is incorrectly identified as "Charine".