Docs for SmartTaghttp://support.dialog-semiconductor.com/resource/um-b-018-smart-tag-2-re...说它实现了“数据信息service" which is probably an error in documentation.
There's no such thing as "Data Information service". There is actually "Device Information Service (DIS)"https://developer.bluetooth.org/TechnologyOverview/Pages/DIS.aspx.
Device:
Hi farmazon3000,
Should be a typo, thanks for the indication.
Best Regards MT_dialog