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Sony unintentionally sold 700,000 camcorders in 1998 that could see through people's clothing. The camcorders could see through clothing because they could record in infrared.

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In 1998, Sony faced an unusual and controversial situation when it was discovered that about 700,000 of their camcorders had the unintentional ability to see through people's clothing under certain conditions. This capability stemmed from the camcorders’ NightShot feature, which allowed users to record images in the dark using infrared light. Infrared light, different from visible light, has the ability to penetrate certain types of clothing materials, primarily those that are thin or lightly colored.

Initially designed to enhance the camera's functionality in low-light environments, the NightShot feature inadvertently allowed it to record images that appeared to see through clothing when used in daylight with the infrared feature activated. Public reaction was swift and varied, with privacy advocates raising serious concerns about the misuse of this technology. Sony, realizing the potential for misuse, quickly moved to rectify the situation.

To address the issue, Sony modified the NightShot feature to limit its functionality during daylight hours, thereby preventing the camera from capturing images in the infrared spectrum when it would be most likely to see through clothing. In addition, they offered a modification for customers who had already purchased the affected camcorders, ensuring that these devices could no longer exploit this privacy-compromising function.

The incident not only spurred Sony to re-evaluate their product features but also prompted a broader discussion on consumer electronics and privacy. It highlighted the need for tech companies to consider the possible unforeseen consequences of their innovations, especially in terms of privacy and security. The Sony camcorder incident remains a cautionary tale about the balance between technological advances and ethical considerations in product design and functionality.