Haptic Internet Technology: A New Era of Interaction

Fremont, CA: The Technical University of Munich (TUM) developed a revolutionary technology called Haptic Codecs for the Tactile Internet (HCTI).  This technology has revolutionized how humans perceive texture and feedback in remote operations and online commerce by enabling touch sensations to be conveyed via the Internet.

HCTI functions much like existing media codecs—think JPEG for images or MP3 for audio—but for touch. The technology compresses and transmits haptic data, making it possible to experience physical sensations remotely. Applications include telesurgery, where surgeons can feel their way through delicate procedures from miles away and immersive gaming, where players can interact with virtual worlds as though they were real.

Unlike audio or video, transmitting haptic data presents unique challenges. Realistic touch requires two-way communication at lightning speed—ideally within one millisecond. This allows users to send movement commands while simultaneously receiving tactile feedback. The process forms a global control loop, continuously exchanging input and response, creating a seamless interaction.

HCTI addresses these challenges with two innovative solutions: Kinesthetic Compression, where a component records and transmits data about limb position and applied forces, enabling accurate movement replication. Another is tactile compression, which focuses on the sensitivity of human skin, allowing users to feel textures, such as the difference between paper and metal. These codecs work alongside a standardised protocol that ensures devices are compatible and perform optimally.

Before HCTI, transmitting haptic data was resource-intensive, often requiring networks to handle up to 4,000 data packets per second. This approach led to inefficiencies and occasional data loss, undermining the user experience. HCTI’s advanced compression algorithms reduce the data rate without sacrificing quality, solving this problem and making the tactile internet viable for widespread use.

The potential applications are transformative. Telemedicine will see surgeons operating remotely with the same precision as in person, revolutionising healthcare accessibility. Remote vehicle operators will gain a layer of safety and control, feeling the terrain they navigate. In entertainment, gamers can experience virtual environments like never before, with tactile sensations enhancing immersion.

As HCTI moves from research labs to real-world applications, it promises to reshape how we interact with technology. This innovation doesn’t just enhance functionality—it fundamentally changes our relationship with the digital world. The tactile internet is now a tangible reality that could define the next era of connectivity.