Artificial Intelligence (AI) on Instagram: "This simple DIY laser tripwire uses a Raspberry Pi and an optical sensor to protect your screen privacy. A focused light beam runs across your desk, and the moment someone crosses it, the system detects the interruption and instantly triggers an action—such as locking the screen or hiding sensitive content. It’s a clever example of how low-cost electronics can enhance privacy in shared spaces, offices, or public work environments, without directly inte