Digital key cards

I am looking for a freelancer with experience creating digital key cards. The cards must be magnetic stripe cards, and I need 101-500 of them. These cards will be used for a specific purpose, but the details of this application are not relevant for this project. The successful freelancer will be able to provide professional equipment and services to create these cards quickly and cost effectively. Quality and accuracy are of the utmost importance, so experience in creating these key cards is a must. Furthermore, the successful applicant should be able to deliver these cards within a reasonable timeline. Please contact me with any questions or if you need any further details about the project. Thank you for your time and consideration.