Nintendo Love Tester: More Popular Than the Vitality Sensor

The Love Tester is an actual Nintendo product from way back when the company just started making toys. According to gameSniped, it was made by Nintendo

1969 Nintendo Electronic Love Tester (ラブテスター) – Nintendo Sega Japan!

The Garden City News (11/24/23) by Litmor Publishing - Issuu

Photos of Nintendo's Love Tester

E3 - 2009: Wii Vitality Sensor

Cyber Monday 2018: The best deals you can still get for 'Cyber Week

beforemario: Nintendo Love Tester (ラブテスター, 1969)

Nintendo Love Tester: More Popular Than the Vitality Sensor

Nintendo CEO: Wii care about your heartbeat, but not your iPhone, the recession or free games

E3 - 2009: Wii Vitality Sensor

Found this old gaming magazine talking about Retro Studios pre Metroid Prime (or any published game for that matter) : r/NintendoSwitch

The Nintendo Collection So Large It Became a Museum

Is the Nintendo Switch more powerful than the PS Vita? - Quora