This is a Bluetooth tool program produced by Advantech, which can be used with the electronic paper produced by Advantech (model: EPD-250, EPD-252, EPD-353) to transmit and display basic images through the Bluetooth transmission method of the mobile phone. Users can use built-in templates to create images related to their own applications, such as business cards, price lists, conference room door panels, business hours, memos, shelf labels, advertising billboards, etc. In addition, users can also connect to DeviceOn/ePaper, the electronic paper back-end management system produced by Advantech, and create templates on the web page through custom layout, and then download the customized templates and data through the Internet. Provide more diverse and flexible applications. This tool program has a built-in camera, photo album, and image processing, dithering and color enhancement functions. You can quickly create business cards and product introductions by taking photos, and the colors can also show the richness of photos. This tool can connect up to four e-paper devices at the same time to speed up image pushing efficiency. This tool can also upgrade the firmware of e-paper devices to provide additional customized services.