question: Why does pressing harder on a TV remote with near flat batteries, seem to work better?
comment: As the batteries die, they push out lower voltage. The buttons are basically conductive dots that bridge a contact under the button and complete a circuit, making the led flash in a certain way to tell the TV what to do. Pushing harder can make a better contact, allowing the led to light up \ flash brighter when the batteries are low.
passages: The Touch surface on the Siri Remote is customizable. Tracking when set to Fast adjusts the thumb movements made to amplify the distance in relation to how far the thumb has moved on the glass touchpad. Conversely when tracking is set to slow, larger movements of the thumb on the touchpad will tune down the distance that is traversed on the screen. This can help people with disabilities.
   BULLET::::- Sensitivity lost by increases in either arm weight or pan/column weight can be counteracted only through decreased static friction in the pivot points
   BULLET::::- If the weight of the pan above either vertical column is itself greater than zero and any weight placed on that pan is off-center then that pan's tendency to "tilt" will cause the balance to exist in a state of "tension" at the pivot points below that pan. This tension will manifest as an increase in static friction.
  
  BULLET::::- The longer the arms generally, the more sensitive the balance, though longer arms usually entail greater arm weight, which tends to decrease sensitivity
  
  BULLET::::- Heavier pans and vertical columns also tend to decrease sensitivity
   Section::::Displacement sensitivity.
   The taptic engine in the iPhone 6S provides haptic feedback each time users press the screen harder.
  
  Section::::System features.:Battery.
   As the lever pivots on the fulcrum, points farther from this pivot move faster than points closer to the pivot. The power into and out of the lever is the same, so must come out the same when calculations are being done. Power is the product of force and velocity, so forces applied to points farther from the pivot must be less than when applied to points closer in.
   Haptic feedback provides for tactile confirmation that a key has been successfully triggered i.e. the user hears and feels a "click" as a key is pressed. Utilising hysteresis, the feel of a physical key can be emulated to an even greater degree. In this case, there is an initial "click" that is heard and felt as the virtual key is pressed down, but then as finger pressure is reduced once the key is triggered, there is a further "unclick" sound and sensation as if a physical key is respringing back to its original unclicked state. This behaviour is explained in Aleks Oniszczak & Scott Mackenzie's 2004 paper "A Comparison of Two Input Methods for Keypads on Mobile Devices" which first introduced haptic feedback with hysteresis on a virtual keyboard.
   After the 1900 patent, a major improvement was made with the addition of resistor teeth. Fitted into the gaps where there is no flighting, these teeth increase the agitation within the press, further diminishing co-rotation tendencies.
  
  Section::::Expanded applications.
   Section::::Efficiency.
   BULLET::::- Zoom (Z) the reverse application of the Pinch operator. value in MS = 200 Ms
  
  BULLET::::- Initial Act (I) KLM assumed the user is prepared to begin an action, touchscreen devices require users to prepare them for use (home button or password)
  
  BULLET::::- Tap (T) operator refers to the physical action of tapping an area on the touchscreen device in order to initiate some change or action
  
  BULLET::::- Swipe (S) usually a horizontally or vertically swipe like changing the page in a book. value in MS = 70 Ms
   In general, only high-end electronic keyboards implement true pressure sensitivity, while most professional-quality electronic keyboards support velocity sensitivity. Most inexpensive electronic keyboards, such as toy electronic keyboards and basic learning keyboards manufactured by Casio and Yamaha in the US$100 price range, do not have velocity sensitivity, but instead a manually-adjusted note volume.
   Piezoelectric actuators are also employed to produce vibrations, and offer even more precise motion than LRAs, with less noise and in a smaller platform, but require higher voltages than do ERMs and LRAs.
  
  Section::::Implementation.:Force feedback.
   Section::::Mechanical Considerations in Design.
   Section::::Leg length test reliability.
   In the case where it is much longer, the most typical case, it dominates the Temporal resolution. The shape of the response during the settling time also has as strong effect on the Temporal resolution. For this reason probe leads usually offer an arrangement to 'compensate' the leads to alter the trade off between minimal settling time, and minimal overshoot.
   One example is utilization of electrostatic force that can be applied in:
   BULLET::::- The speed at which the control lever is operated does not affect the speed at which the spring releases its tension. Moving the control quickly or slowly simply compresses the spring, and the actuator does not move until the tipping point is crossed.
  
  BULLET::::- The tipping point design prevents damage to the contacts due to the switch being opened slowly, resulting in arc formation, or the switch contacts not being closed completely and firmly.
   In practice, if the re-calibration interval is set too short and if the user applies moderately consistent pressure to the stick for such an interval, this method results in an incorrect zero point. Additional pressure again moves the cursor, but the calibration may occur again, requiring even more force. If the user releases pressure at this point, the change will be interpreted as an instruction to move the opposite direction. In time, the software will re-calibrate and stop the motion.
  
  Additionally, if "press-to-select" is enabled, the software may generate unexpected click events by touching the pointing stick during typing.
   In SVET, the probe vibration results in a more sensitive measurement than its non-vibrating predecessors, as well as giving rise to an improvement of the signal-to-noise ratio. The probe vibration does not affect the process under study under normal experimental conditions.
   Much more important is the accuracy humans have in selecting targets with their finger or a pen stylus. The accuracy of user selection varies by position on the screen: users are most accurate at the center, less so at the left and right edges, and least accurate at the top edge and especially the bottom edge. The R95 accuracy (required radius for 95% target accuracy) varies from in the center to in the lower corners. Users are subconsciously aware of this, and take more time to select targets which are smaller or at the edges or corners of the touchscreen.
   In general, the less compatible the device is with the domain object, the more complex the interaction technique. For example, using a mouse to specify a 2D point involves a trivial interaction technique, whereas using a mouse to rotate a 3D object requires more creativity to design the technique and more lines of code to implement it.
   Pivot-shift is not straightforward to perform. For many with instability, the reproduction of instability is unpleasant and 'visceral'. Accordingly, having experienced it once, the patient is unlikely to relax enough for a second or confirmatory test. This is probably why the sensitivity of the three major knee exams is increased with general anesthesia. 
  
  Similarly, with meniscal involvement, such as a bucket handle tear of the medial meniscus, range of motion may be limited and muscle guarding may produce a false negative result.
  
  Section::::References.
   Reviewers noted that the display felt quite flimsy, and that applying everyday amounts of torque, such as opening the display from one corner, would result in noticeable bending. Sony responded that this was by design, saying that under torque it would bend rather than break.
   Section::::Applications.
   Examples of types of pointing devices include:
  
  BULLET::::- mouse
  
  BULLET::::- touchpad
  
  BULLET::::- pointing stick
  
  BULLET::::- touchscreen
  
  BULLET::::- trackball
  
  Section::::High-degree of freedom input devices.
  
  Some devices allow many continuous degrees of freedom as input. These can be used as pointing devices, but are generally used in ways that don't involve pointing to a location in space, such as the control of a camera angle while in 3D applications. These kinds of devices are typically used in virtual reality systems (CAVEs), where input that registers six degrees of freedom is required.
  
  Section::::Composite devices.
  