Fans of the Pokemon game have collaborated together for developing a crowd-sourced database. This will be pairing trainers in this game to the eggs which will  be hatched as Shiny Pokemon. You can visit the Shniy trainers forum on Reddit by following this link- /r/pokemontrades on Reddit. To put it in simple words, what the Reddit users have essentially done is used an app known as Instacheck Hotspot for locating the ‘Shiny Value’ of an egg and a trainer, as reported by Kotaku. Apparently, when the Shiny Value of the egg and trainer match, Shiny Pokemen will be hatched. Instacheck Hotspot will be using the wireless connection of the computer for creating a Wi-Fi hotspot.  The user should use this for connecting the 3DS with the internet. The computer will then start analyzing the network traffic that is directed towards the 3DS. Subsequently, it will then look for data belonging to all Pokemon sent or shown during trading. With Instacheck, the user can view all details, even that of unhatched eggs. This was stated in the description in the aforementioned forum that talks about the app. On Reddit, Pokemon gamers post their Shiny Value for eggs as well as characters in a bid to trade easily with each other in the online sphere for matching and hatching Shiny Pokemon. Another alternative is that the gamer can trade an egg to anyone and that person will hatch the egg for him and trade the hatched egg back. There are several ways to look for Shiny Pokemon in the feral world without requiring any hatching. One of the most common way to find a Shiny Pokemon is a method known as chaining.  

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