California Code, Penal Code - PEN § 3000.07

(a) Every inmate who has been convicted for any felony violation of a “registerable sex offense” described in subdivision (c) of Section 290 or any attempt to commit any of the above-mentioned offenses and who is committed to prison and released on parole pursuant to Section 3000 or 3000.1 shall be monitored by a global positioning system for the term of his or her parole, or for the duration or any remaining part thereof, whichever period of time is less.

(b) Any inmate released on parole pursuant to this section shall be required to pay for the costs associated with the monitoring by a global positioning system. However, the Department of Corrections and Rehabilitation shall waive any or all of that payment upon a finding of an inability to pay. The department shall consider any remaining amounts the inmate has been ordered to pay in fines, assessments and restitution fines, fees, and orders, and shall give priority to the payment of those items before requiring that the inmate pay for the global positioning monitoring. No inmate shall be denied parole on the basis of his or her inability to pay for those monitoring costs.