Persistent storage problem with HbbTV on older devices

Smart TV
1

Hi,

We are providing HbbTV services for some TV broadcasters in Turkey. In our HbbTV application, we generate a unique device id and store this data on the device both in a cookie and on local storage. Additionally we store the opt-in choice of the user as well. But on some older devices (especaially with Tizen 4.0), the data we have stored is lost and the TV device generates new device ids and asks the user’s opt-in choice repeatedly. When we check the logs at the backend, we see that more than hundred deviceids have been generated with the same remote IP (the same TV Device) in 24 hours.

Also when we check the user agent string , we see that it is not static. There is a suffix at the end “VID/” and the numbers are incrementing.

2025-06-09 01:25:07 HbbTV/1.2.1 ( DRM;Samsung;SmartTV2018;T-KTM2LDEUC-1341.2;KantM2_LITE;) Tizen/4.0 ( TVPLUS SmartHubLink 360avc) Chrome/56 VID/1
2025-06-09 01:26:32 HbbTV/1.2.1 ( DRM;Samsung;SmartTV2018;T-KTM2LDEUC-1341.2;KantM2_LITE;) Tizen/4.0 ( TVPLUS SmartHubLink 360avc) Chrome/56 VID/3
2025-06-09 01:26:42 HbbTV/1.2.1 ( DRM;Samsung;SmartTV2018;T-KTM2LDEUC-1341.2;KantM2_LITE;) Tizen/4.0 ( TVPLUS SmartHubLink 360avc) Chrome/56 VID/4
2025-06-09 01:27:16 HbbTV/1.2.1 ( DRM;Samsung;SmartTV2018;T-KTM2LDEUC-1341.2;KantM2_LITE;) Tizen/4.0 ( TVPLUS SmartHubLink 360avc) Chrome/56 VID/6
2025-06-09 01:27:51 HbbTV/1.2.1 ( DRM;Samsung;SmartTV2018;T-KTM2LDEUC-1341.2;KantM2_LITE;) Tizen/4.0 ( TVPLUS SmartHubLink 360avc) Chrome/56 VID/7
2025-06-09 01:28:13 HbbTV/1.2.1 ( DRM;Samsung;SmartTV2018;T-KTM2LDEUC-1341.2;KantM2_LITE;) Tizen/4.0 ( TVPLUS SmartHubLink 360avc) Chrome/56 VID/8

To be able to implement the opt-in flow without disturbing the viewer, we should be able to store our data persistently on the device.

How can we handle the situation?

Best regards,

2

Hello,
For Smart TV questions, please log in to TV Seller Office: (https://seller.samsungapps.com/tv), go to the 1:1 Q&A section, and ask a question.

You can also find the local content manager.

Your Samsung Content Manager helps you manage various application development and distribution scenarios, such as permission to use partner-level privileges, removing application versions from distribution, and publishing an application in multiple countries or outside of the United States.

To request the contact information for your local Content Manager, you can request this information through the “1:1 Q&A > …” menu.