For a device, we focus on a magnet that does not
require batteries and then develop the MagNail (nail art
that uses a magnet as the decorative material) system.
This recognizes the status of the user’s finger while
operating smart devices such as smartphones and
tablet PCs, using the magnetic sensor for measuring
the Earth’s magnetism inherent in the device. The
majority of smart devices can be operated via this
integrated magnetic sensor.
Magnets are featured in recent studies [1, 2, 3, 4, 5],
and some studies also interact with smart devices.
MagiTact [4] introduced an interaction method using a
magnet. MagPen [5] uses a pen-type device with a
built-in magnet. Although we use the magnetic sensor
of smart devices, MagNail is a type of wearable device
used to detect gestures or postures of the user’s fingers.
Users are not required to hold any physical devices.