The first patent, "Camera as Input Interface," adds alternate input methods for a touchscreen phone, particularly useful when the touchscreen is pressed against your face during a phone call. The patent describes a method using the built-in camera as a gesture detector, recognizing "swiping" up, down, left, or right using a finger. The gestures could be used to control voicemail, for instance, by swiping "forward" or "back" to skip to the next or previous message. The input could be augmented with accelerometer data to recognize a "tap" as well, according to the patent application.
MacRumors notes that Apple has filed a number of alternate input methods for the iPhone, including a rear surface or an outer bezel that are also touch-sensitive.
The second patent, "Shape Detecting Input Device," describes a system using a touchscreen to recognize uniquely shaped signets, and to perform actions associated with a specific shape. One application would be to log in a unique user based on the recognized shape. This is similar to the now-defunct practice of stamping a seal from a signet ring into sealing wax to verify a document's authenticity or source. If such a signet were indeed on a ring, it could also be used to unlock an iPhone.
Apple's patent suggests that unique signet shapes could be embedded in a ring, a tag, a card, a stamp, or even a key. Other suggested actions initiated by the signet shape recognition include configuring a system to a unique user's needs, launching certain applications, or encrypting or decrypting messages or other content, making the signet like a modern, high-tech decoder ring.
Source: Arstechnica.com
