To authenticate your system with talque you will need two identifiers (strings):
API client ID, which identifies you but need not be kept secret.
API secret, which you must keep secret
To use the authentication for a HTTP call you need to pass them as headers:
X-TQ-CLIENT_ID: nHEe3ZDiuvPMighaRXtEX-TQ-SECRET: qqHWYhTSpbYExzde5CM5
As always, HTTP headers must be latin-1 encoded. Both API client ID and secret only consist of plain ASCII characters.