Labelflash is a competing technology to LightScribe.
With special Labelflash DVD media, you can burn a label on the top side of a DVD just like you can with LightScribe drive and LightScribe DVDs. The two types of media are not interchangeable, however - you can't label a LightScribe disc in a Labelflash drive or vice versa.
A Labelflash drive can also make a label on the unused space of DVD+R and DVD-R media, like DiscT@2 in the Yamaha F1 CD-RW drive, but unlike the Yamaha drive the Labelflash drives cannot burn a label on CD-R media.
There is AFAIK only one type of Labelflash media on the market: Fujifilm 16x DVD-R Labelflash media.