SanDisk has announced the Cruzer(R) Titanium Plus, a USB flash drive offering  automatic online backup for every file copied to the drive. The Cruzer Titanium Plus has a capacity of four gigabytes (GB) and is the first SanDisk flash memory device to offer online backup.

The BeInSync backup requires an initial registration. When the drive is plugged in and the user is online data will sync automatically with an online storage account. BeInSync uses Amazon’s S3 storage service provided by Amazon Web Services. BeInSync encrypts all files during transmission from Cruzer Titanium Plus to Amazon’s servers to protect user’s data.

Cruzer Titanium Plus will be available in March, with a manufacturer’s suggested retail prices of $59.99. The online backup service requires Windows 2000 (SP4), Windows XP or Windows Vista. After six months of free service, online backup costs $29.99 per year (credit card required).