Sony Interactive Entertainment filed a patent for a PlayStation cassette at the Brazilian National Institute for Proprietade Industrial (INPI) earlier this year, discovered by the Dutch website LetsGoDigital. Sony used Kasznar Leonardo as a local "IP agent" to file the application.
The design of this PlayStation cassette was created by Yujin Morisawa, Senior Art Director of the Corporate Design Center of Sony Interactive Entertainment, and responsible for all related products under the PlayStation brand. In his 15 years with Sony, Yujin has developed products in a variety of fields – from cosmetics and electronics to agent robots (via iF World Design Guide).
Do you have a Deja-vu? If so, that is completely normal. Every single detail of the PlayStation 5 development kit (later turned out to be genuine) was posted the same way on the Internet. The patent developed by Morisawa was registered at the INPI and then discovered by LetsGoDigital. Needless to say, this gives a lot of credibility to this rumor. The purpose of this PlayStation cassette, however, is still unclear at this time. Sony has never used cassettes for its home consoles, and it has been officially confirmed that the PlayStation 5 has a Blu-ray drive that can read three-layer discs (up to 100GB).
Sony did, however, use cassettes for the PlayStation Vita, the latest handheld console released in 2012. At the same time, Sony has repeatedly stated that there is currently no new handheld console in operation, mainly due to the failure of the PlayStation Vita and the failure of the PlayStation Vita is the huge rise of mobile gaming through smartphones and tablet devices.
Of course, they could have experienced a change of heart since then. However, we are curious to see where this will lead and in any case will inform you of further developments regarding this particular patent.