Unifi Pen Sense

Unifi Pen Sense

Pen Sense is a marvelously interactive yet deceptively simple effect every performer should have in their repertoire, ideally suited for parlor and stage performances.

Unifi Pen Sense is a marvelously interactive yet deceptively simple close-up effect every performer should have in their repertoire, ideally suited for parlor and stage performances.

The performer draws a picture of his prediction and colors it in prior to placing it into a sealed envelope.  The prediction is of a man with a red hat, green t-shirt, blue pants and purple shoes.  The performer hands the envelope to a member of the audience member for safe keeping … the volunteer can sit on it, hide it under his shirt or even stand on it!

The performer then presents the volunteer with an uncolored duplicate of the prediction – placing it on a table, artists easel, pin board or magnetic white board.  The performer hands the Unifi Pens Sense Markets to the audience member and asks them to select any marker AND turns his back to the audience member or is blindfolded or both. The audience member selects a color eg: green. As the Performer knows that he has already colored the t shirt in green, he simply asks the audience member to color in the t shirt in with the green marker and when finished to put the marker on the floor.  This is repeated until the spectator has through “free choice” and unseen by the performer used all crayons.

The finale comes with the completed colored drawing by the audience member and the opening of the audience member guarded envelope which holds the prediction … revealing that the color choices match exactly and proving that magic truly exists! As a grand finale the performer can further “strip off” to reveal he/she is dressed in the matching clothing and exact same colors of the drawing prediction and audience member drawing. Unifi Color Sense, so easy to use and so effective a tool.

Pen Sense will notify you via a wireless thumper once the spectator has selected a particular colored marker, however Pen Sense extend this functionality to provide an assortment of unique features, including:

  • Plain English voice announcements (delivered via Bluetooth) ensures that you do not need to remember complex vibration sequences (although if you prefer, all information can be delivered via the Unifi Thumper or Notifier Display Module).
  • Customizable voice messages may be downloaded directly to the Thumper such as ““green, color in the t shirt”.
  • Apple iPhone, Apple Watch and the Notifier Module provide visual identification of which crayon has been selected and which section of the drawing to color in.
  • Movement sensor instantly notifies the performer of the selected crayon (in a presentation where the markers are handed out to the audience).
  • A magnetic field sensor instantly notifies the performer when the marker is removed from a magnetic field.


  • Utilises standard Sharpie “Chisel” Pens.
  • In built motion sensor.
  • In built magnetic field sensor.
  • Plain English Descriptions of the color and the area to color in by the spectator, delivered via a Bluetooth earpiece.
  • Fits in your pocket and ready to go at a moment’s notice.
  • No assistants.
  • Apple iPhone / Apple Watch support.
  • Bluetooth audio announcements.
  • Customizable audio announcements.
  • Multilingual Support.
  • Low battery notification.

What’s included

  • 6 x Sharpie Markers.
  • Instructional video link
  • 12 Month license and free upgrades for the iPhone and Apple Watch applications.