This useful HKUST-invented teaching and learning tool allows students to respond to an instructor’s questions in class by using iPRS in HKUST iLearn app on their mobiles or clicking on their personal response system (PRS) handsets. It is especially valuable for immediate feedback on learning and for generating participation if students are reticent about answering verbally in front of others.


Created at HKUST
Innovative interactive wireless (to technical writer: we only invented the wireless version, the wired version was existed before ours) PRS was invented in the 1990s by Prof Nelson Cue, then Head of the Department of Physics. Based on infrared technology, it was first deployed at the University in 1998 and since then has been successfully used in numerous courses.

The Secondary Generation PRS
In 2011, the University updated the system in all teaching venues, replacing infrared transmission with radio frequency to reduce interference and improve stability. The slimmer white color handsets were also introduced. These handsets were slimmer and therefore easier for the students to carry around.

The Latest Version: The Cloud-based PRS
In 2014, ITSC successfully developed the cloud-based, Internet enabled personal response system. The system was named iPRS. In Fall 2014, iPRS was first setup in 4 teaching venues as pilot sites. With this fruitful experiences gained, the number of iPRS ready venues was increase from 4 to 27 in Spring 2015. In the Fall Semester 2015, more teaching venues are become iPRS ready. It takes the total number of iPRS ready sites to 90. As starting from Jan 2016, all central teaching venues are iPRS ready.  

Please visit this iPRS page to learn more about the system.

Available To

Students, Teaching Staff

Service Fee


Service Hours


Getting Started

  • HKUST iLearn app for iPRS App_Store_Badge_US-UK_135x40 en_app_rgb_wo_45
  • About iPRS
  • Students are no longer required to borrow a PRS handset for using the iPRS system in classes.  However, if a student who still wish to use PRS handset for a special reason, he/she may visit the ITSC Service Desk in Rm 2021 (Lift 2) to check out one.