6 Interaction devices
• three or five finger thimbles (a fixture for the finger tip), each featuring IR LEDs
connected via flexible wires (see figure 6.19 on page 90)
• wireless synchronization using a receiver for a coded IR flash (modulated flash)
• rechargable batteries and a battery charger
Additionally, the FINGERTRACKING2 Tactile has:
• one vibration motor for tactile feedback on each thimble
• radio module in the hand unit for addressing the vibration motors
(a) Standard
Fingertracking
device with three
active finger
markers
(b) Standard
Fingertracking
device with five
active finger
markers
(c) FINGER-
TRACKING2
device with three
tactile active
finger markers
Figure 6.12: All Fingertracking devices
Data output The output data consists of:
• position and orientation of the hand,
• number of the tracked fingers and a value to distinguish between left and right hand
• position and orientation of the outermost phalanxes; the radius of the finger tip to
identify its position and orientation
• angles between the single phalanxes and their respective lengths
Please refer to chapter B.1.7 on page 256 for more information about the format of the
output data.
Tactile control Additionally FINGERTRACKING2 Tactile offers a list of control com-
mands to address the tactile feedback within your application. These consist of:
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