ddm hopt+schuler is a mid-sized, family owned, German company, based in Rottweil Germany with 200 employees focused on Designing, Developing and Manufacturing quality products. They specialize in three product groups, Contact and Contactless Card Readers, Switches and Ticketing systems for an array of markets and applications. They have both off the shelf products as well as custom products to assure that you have the perfect quality solution for your design and end product. All of ddm hopt+schuler's engineering mechanical, hardware and software is done in-house.