How to get geolocation data with JavaCard from SIM

Question

I would like to write a simple cardlet which takes geolocation data from my SIM card.

I read about JavaCard but I have no idea how I can use it to get geolocation.

I read that SIM cards keep the information about

Local Area Identity

and I would like to get this data with my cardlet.

Could you suggest me some solutions(APIs) f.e. with JavaCard.

Thank you in advance

Answer 1

There are some possible (U)SIM Toolkit APIs:

1. Using EVENT_DOWNLOAD_LOCATION_STATUS. Register this event on install method, and applet will receive the event when there is location update in processToolkit method.
2. Using PROVIDE_LOCAL_INFORMATION proactive command, with command qualifier set to '00' ( Location Information / MCC, MNC, LAC and Cell Identity).

For two solutions above, you need to check that the mobile phone you are using has the support of the mechanism, indicated in its TERMINAL PROFILE.

Alternatively, you can also check for EF LOCI under DF GSM which keeps the Local Area Identity information and read it using READ BINARY.