According to the PCWorld website, with the new chip of Freescale's thin grass blades, the smart card will be smarter and the fitness bracelet will be more comfortable to wear.

Freescale's latest chip thickness for low-energy devices such as payment cards, wearables and medical sensors is only 0.34 mm thick for IoT devices.

According to PCWorld, the K22 is an MCU (microcontroller unit) with built-in memory that can be programmed to perform specific tasks. The MCU's processing power is not as powerful as that of a PC and a mobile phone running a complete operating system and a device with a display, but it can be used for smaller, dedicated devices that do not need to be recharged every day. Steven Tateosian, Freescale's microcontroller system division manager, said some MCUs include wireless technologies such as Bluetooth Low Energy.

The new chip is only about half the thickness of the current MCU chip and measures 4.1 x 3.6 mm. This thin thickness makes the K22 suitable for payment and access cards, which are approximately 0.75 mm thick. Tati Ossian said that this allows card makers to add more features without increasing product thickness.

According to PCWorld, the processing power and memory of the MCU chip enhance the security features of standard cards. For example, an office door card stores encrypted information about the cardholder and its privileges. Tati Ossian said this would help achieve more complex, policy-based access control than current magnetic stripe cards or RFID cards.

The chip enables a payment card with an E Ink display to display more information, including information sent by the card issuer. Tati Ossian said that when the store queued for checkout, the cardholder could enter a PIN code or draw a graphic on the capacitive touch surface of the card. The computing power of the MCU will lay the foundation for this.

PCWorld points out that in other types of devices, thinner chips will give designers more flexibility. It is easier to bend than a thicker MCU and is small enough for products that can bend and stretch. Tatiosian said that one potential use is a blood glucose monitor attached to an extendable electronic patch on the surface of the skin. The blood glucose monitor can even be implanted under the patient's skin. In wearable devices such as smart watches, thinner parts can make the finished product smaller.

Tatios An said that at present, equipment manufacturers have been able to purchase K22 in large quantities to mass produce products at comparable prices to relatively thick, functionally similar chips. Freescale also plans to reduce the thickness of other products in the Kinetis family of MCUs.

Concerned about surprises

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