Palm Rejection / Massive Clearance

Palm Rejection / Massive Clearance

Overview

Palm Rejection (DISPLAX SKIN) or Massive Clearance (DISPLAX MESH) allows the Touch Sensor to ignore large-area contacts—such as palms, hands, or arms (or even water)—while still detecting finger touches.
This prevents accidental or unintended touches during typical interaction with the screen.

⚠️ *Note: This feature is not available for Skin Dualtouch.


How It Works

Palm Rejection or Massive Clearance uses the size of the detected touch area (the contact patch) to differentiate between:

  • Valid touches: fingertips

  • Ignored inputs: palms, hands, arms, sleeves, water puddles

Since touch-cell density differs by sensor size, the required value changes according to the sensor’s dimensions.

Use the table below to configure Palm Rejection to reliably ignore an adult hand:

Touch Sensor SizeSuggested Palm Value
30″ – 41″8
42″ – 49″7
50″ – 64″6
65″ – 75″5
>75″4

💡 Tip: Smaller sensors need higher Palm values because a hand covers more active cells.
Larger sensors need lower Palm values.

Visual Examples

Palm Rejection OFF

A full hand on the screen is recognised as multiple touchpoints.


Palm Rejection ON – Incorrect Setting

Palm Rejection is enabled, but the touch area threshold is too low.
Some touches are still detected → increase the Palm value.


Palm Rejection ON – Correct Setting

The palm or hand contour appears on the visualisation, but no touchpoints are reported.


Arm Rejection - Incorrect Setting

An arm placed on the sensor generates multiple touchpoints.


Arm Rejection - Correct Setting

With correctly configured Palm Rejection, resting an arm on the screen does not trigger touch events.


Massive Detection Parameters for DISPLAX MESH and SKIN ZEETO

Massive Clearance

Defines the area around a detected Massive where additional touches will be ignored.
  1. Higher values increase the blocked area, reducing false touches caused by nearby fingers.
  2. Lower values make the rejection zone smaller, which can improve responsiveness.
💡 Increase Massive Clearance only as much as needed — excessive values may block valid touches close to the hand or arm.

Massive Min Size - SKIN ZEETO ONLY

Defines the minimum size a detected touch must have to be considered a Massive.
  1. If this value is too low, normal finger touches may be mistaken for a palm and rejected.
  2. If it’s too high, larger objects may still be detected as normal touches.
  3. The default value is 100.
✅ Recommended: Start with a midrange value and adjust gradually until palms and arms are correctly rejected without affecting normal finger touches.

  1. Start with low Gain and Threshold values.
  2. Gradually increase both until smooth, stable touch performance is achieved.
  3. Adjust Massive Min Size* and Massive Clearance to filter out palm or arm touches without losing finger sensitivity.
  4. Test across the entire sensor area — especially near edges and corners.
*Only available in SKIN ZEETO

Additional Notes

  • Depending on your DISPLAX product, the visual representation of palm/hand rejection may vary slightly. On Displax Mesh and Skin Zeeto products, it is called Massive Clearance.

  • Adjust Palm Rejection after the sensor is fully installed and environmental conditions are stable.


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