The article takes the storage and reproduction of information published by users in the past by smartphones and social software as an example, and analyzes and discusses how functions and technologies such as "That Year Today" affect fax number database user experience and reshape user memory. , to share with everyone. The online world has been pursuing the freshness and timeliness of content, but with the passage of time, helping users trace past memories has also become an easter egg-type function of many media, platforms and smart devices. So, with the help of algorithms, traces of past actions are constantly being digitized into "new" content. More and more products are set up with functions such as "that year and today", trying to respond to people's nostalgia or curiosity about the fax number database key points of the past. However, these features can also create embarrassment, such as pushing a photo of an ex to a user at an inopportune node... 01 Status: You and I travel through time and space every day Looking back on the experience of taking a photo or publishing a piece of text five years ago, in this process of “recording” with media, the data is stored and can bring us new imagination five years later. This behavior of regularly recommending past information is like writing a letter to the future self, and it builds a time-space tunnel for people - first things from the past "travel" to the present, and then people's thoughts in the present are because of such a information and "travel" back. Today's netizens have more or less fax number database experienced this kind of "travel" experience, because there are quite a few products developed with similar functions. For example, the social media Timehop, which focuses on integrating memories, has a special function of magnifying "old memories".