Nintendo first showed off the Wii Vitality Sensor at E3 2009, though news about it (or lack thereof) has made many wonder if the peripheral was scrapped by the company. Nintendo president Satoru Iwata, however, says that Nintendo wants to make sure they get the technology right before releasing it.

“I imagine that you are worried about that because it hasn’t been put on the market even though a long time has passed since it was initially announced,” said Iwata to investors. “This is a totally new type of entertainment, and there are large individual differences in the biological information of humans. For example, if it was acceptable that only 80 percent of the users thought the result was natural, then we could propose this to consumers right now.

“However, we are aiming for a level of quality in which 99 percent of consumers feel comfortable, and that is why this project is taking time to complete, said Iwata. I feel that this project has a lot of interesting potential, and we would like to continue this project without giving up, but it is difficult to overcome this hurdle, so please understand that now I cannot clearly say when we will be ready to put this on the market.”