1. technical mastery: passive electromagnetic pen technology is mainly mastered by foreign manufacturers, while domestic manufacturers have relatively few technologies and schemes in this respect. The lack of relevant technical support and patent protection makes it difficult for domestic tablet manufacturers to quickly introduce and apply passive electromagnetic pens.
2. Lack of identification device: The use of passive electromagnetic pens requires the installation of special identification and receiving devices inside the tablet. At present, most domestic flat panels do not have such equipment, and a perfect supply chain system has not been established to support this technology.