EMMA

EMMA, is a popular concierge phone application in Persona 5 Scramble: The Phantom Strikers developed by Madicce.

Appearances

 * Persona 5 Scramble: The Phantom Strikers

Persona 5 Scramble: The Phantom Strikers
The EMMA app, similarly to the Metaverse Navigator, grants the protagonist and the Phantom Thieves of Hearts the ability to access the Jails that lie in the Metaverse. To access a Jail, a single keyword is needed: in the case of Shibuya's Jail, that keyword is "Wonderland".

However, compared to the Metaverse Navigator being bestowed to specific people by "Igor", the EMMA app seems to be a widespread application that serves a purpose as a virtual voice assistant, developed by Madicce.

Though it looks like a normal application to the general public, it's likely that its supernatural functions are unknown or kept secret, which would mean normal people could be lured into inputting the appropriate keyword and be transported to the corresponding Jail without realizing, making them vulnerable to having their desires stolen by Shadows within it. This was abused by Alice Hiiragi, who gave away cards asking people to input her Jail's keyword, disguising her ulterior motives by claiming it'll make them befriend her.