HK.SYSTEMS connects
A strong holding company for innovative solutions:
HK.SYSTEMS brings together leading companies in the fields of HMI (Human Machine Interface) and IoT (Internet of Things).
With a wide range of high-quality products and services, these companies are pioneers in their respective fields, delivering groundbreaking solutions. We combine technical expertise, years of experience, and a clear vision to inspire our customers worldwide and meet their individual needs.
Collaboration and Synergies
Close collaboration and the sharing of knowledge and resources within the holding company create ideal synergies—in this way, the companies of the HK.SYSTEMS Group complement each other perfectly. Together, we deliver forward-looking, sustainable solutions tailored to our customers’ individual needs.
HK.SYSTEMS connects stands for technological excellence, innovation, and customer satisfaction. With a strong focus on customized solutions—products and services that set technological milestones in their respective industries—we strive to inspire our customers worldwide through long-term partnerships.
HK.SYSTEMS connects – for our digital future
Companies in the Human-Machine Interface Sector
At the Heart of the Interface Between Humans and Machines
Operating elements
+ Sensors
For many years, Hoffmann + Krippner GmbH & Co. KG has been a leading provider of innovative solutions in the fields of input technology and sensor technology. With high-quality products and extensive expertise, Hoffmann & Krippner helps companies worldwide make their products more user-friendly and more powerful.
Control elements
+ Metal housing
TES Frontdesign GmbH is the expert in customized solutions for the turnkey production of individual control systems— including the assembly of electronic modules. A team of designers and engineers develops and manufactures unique, aesthetically pleasing, and functional control elements and metal housings.
Companies in the Internet of Things sector
The Internet of Things for a Connected World of Smart Devices

IoT Solutions + Connectivity
Electronics Development
HK.DIGITAL works with its customers to deliver comprehensive, one-stop IoT solutions: starting with the selection, development, and production of suitable devices, through location-independent connectivity, a scalable cloud platform, intelligent data analysis, data transfer to customer systems, and customizable customer apps, all the way to the implementation and operation of the connected solution. “Safety First” applies to every step of the process: guaranteed data security in accordance with certified standards.

IoT cloud platform
API + APP development
ROBIOTIC GmbH works closely with HK.DIGITAL and develops a wide range of key components for joint IoT projects: from the IoT cloud platform to software development and API interfaces, all the way to app development. Customers also benefit greatly from the company’s many years of experience in the areas of data security and data privacy. As an additional service, ROBIOTIC guarantees the smooth and successful operation of the connected solution.

Digital interaction
User + Device
TAP2CLOUD® builds the bridge from analog objects to digital twins. All fixed assets, consumables and other assets can be managed in the user-friendly cloud platform – completely securely and in real time. With TAP2CLOUD, customers can use their data effectively, optimize business processes and develop forward-looking business cases – including easy-to-implement retrofit solutions.
DNA Outside the Holding Company
In addition to our own companies within the holding company, our close-knit technology network also includes external companies. We have maintained long-standing and extremely successful partnerships with them. This collaboration drives us all forward, and the resulting success spurs us on even further.
Digital
Ordering Processes
TK-World AG has revolutionized the digital marketing of rate plans and service connections. Drawing on many years of outstanding expertise, the company implements digital ordering processes, order fulfillment, and customized service concepts. TK-World is a leader in the implementation and operation of white-label shops in the telecommunications sector.
IoT Interfaces
+ e-commerce
spectrum8 GmbH focuses on developing interfaces for automated order data processing, integration with customer and CRM systems, and IoT interfaces. Leveraging its expertise, the company also designs, implements, and operates platforms and e-marketplaces.