Every device must provide a valid access token when it sends telemetry to HERE Tracking. Tokens must be obtained from HERE Tracking. A device must be added to a user account before it will be sent a valid access token.
HERE Tracking requires that you sign your requests for tokens. The signature method uses the OAuth 1.0 standard. For more information on this standard, see the OAuth Core 1.0 specification.
IMPORTANT You must create a new signature for each token request to HERE Tracking. Signatures can only be used once.
The process for generating a signed request is described in the API documentation.