An analog business card file for people who want to cherish their encounters. Log book is a business card file where you can write notes next to the business card. You can manage the information and business cards at the time of the encounter. To store business cards, simply insert the corners into the slits in two places. It's easy to file and keep important information down so you can look back at it later and take the next action right away. It is especially recommended for exhibitions, social gatherings, and other occasions where many business cards are exchanged. Since it is a simple binding with an elastic band, you can easily change the order of the pages. Although it is compact in A5 size, it can hold 120 business cards. With a stylish design that does not look like a business card file, and functional but not too clerical, Log book is chosen as a gift or novelty for finding a job or changing jobs. In addition to business cards, it can also be used to store business card-sized cards, such as shop cards and instant camera photos. We also have a "Log book refill" that can be used interchangeably. It is also recommended to use it in conjunction with "Experience Record Notepad your Log" to create an album of reading records and movie viewing records. By using it in conjunction with the Log book dedicated app "Log book Digi", it is possible to manage analog and digital at once. You can create a book that matches the color of the log book, and you can read three business cards on one page at once. (*Only iOS is supported.) ）