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Handspring was a company that manufactured portable computer/organizer hardware. Initially, the principal Handspring product was a handheld computer called the Visor, which was similar to the Palm computer and used the Palm operating system (Palm OS). Data could be easily transferred between the Visor and other computers, including Palm handhelds, using HotSync technology. Interfacing was possible with Macintosh as well as with IBM-compatible desktop and notebook computers.
The Visor could be tailored to meet the needs of the individual user. It contained an expansion slot called Springboard that allowed the addition of modules, each of which is designed for a specific function. The modules were plug-and-play and hot-swappable. They were automatically recognized by the Visor and could be exchanged without powering-down or rebooting. Data could then be stored and backed up with an optional flash-memory module.
Handspring stopped making Visors and began producing a smartphone called the Treo in 2002. After Handspring merged with Palm, Inc.'s hardware division in 2003 to form palmOne, new versions of the device continued to be released under the new parent company's brand.