Electronic pens generally do not need to insert any cards. An electronic pen is a rechargeable device, usually with Bluetooth and wireless connectivity, that can be connected to smart devices such as phones, tablets or computers.
When an electronic pen is used to write or draw, its built-in sensor can convert the nib movement into a digital signal that can be transmitted to a smart device via Bluetooth or wireless technology. Therefore, the user only needs to keep the pen connected to the smart device without inserting any card. This makes the electronic pen portable and flexible, so that users can easily create and record in a variety of scenarios.
Electronic pen does not need a card, because it is a digital tool, through electromagnetic induction technology to achieve writing, painting and other operations. The pen can be connected to a computer or mobile device via Bluetooth or USB to convert written content into digital files for easy saving and sharing.
Some high-end electronic pens may be equipped with some special accessories, such as infrared receiver, trackpad, etc., but these accessories usually do not require a card. Therefore, when using the electronic pen, you only need to make sure that it has enough power and the correct connection.
Electronic pens usually do not require a card. They use wireless technology, such as Bluetooth, to connect to devices for data transfer and interaction. Some electronic pens may need to be charged, so a charging cable or charging dock may need to be plugged in. However, most electronic pens are convenient devices that can be used without a card.