Computers; Personal computers; Computer workstations comprising computers, computer printers, scanners, computer peripheral devices, and computer display screens; Desktop computers; Laptop computers; Notebook computers; Tablet computers; Thin client computers; Computer hardware; Computer networking hardware; Computer communications hardware; Computer storage hardware; Data processing apparatus; Computer displays; Computer monitors; Interactive touchscreen terminals; Point-of-sale terminals; Video screens; Video display screens; Flat panel display screens; Computer monitor mounts; Computer monitor arms; Computer peripheral devices; Computer docking stations; Computer keyboards; Mouse [computer peripheral]; Video game controllers; Electronic pens [visual display units]; Mouse pads; Headphones; Wireless headphones; Headsets; Earphones; Earbuds; Wireless earbuds; Microphones; Wireless speaker microphones; Telephones; Speakerphones; Conference phones; Teleconferencing phones; Video telephones; Audio speakers; Sound recording apparatus; Computer bags; Sleeves for laptops; Web cameras; Video cameras; Computer memory devices; Batteries; Battery chargers; Computer cables; Audio cables; Computer programs, downloadable; Computer programs, recorded; Computer software programs, downloadable; Computer software programs, recorded; Computer software and firmware for operating system programs; Computer software for file management; Downloadable cloud computer software for management of information technology (IT) systems; Downloadable computer software for controlling and managing voice, video and content over electronic communications networks, computer and mobile device software for voice, content, and video conferencing; Downloadable or recorded computer software for sharing multimedia; Virtual reality software; software development tools; downloadable software development kits; facial recognition software; optical recognition software; muscle recognition software; pulse recognition software; electronic motion tracking sensors for virtual reality technology; electronic sensor devices, cameras, and microphones for gesture, facial, optical, muscle, and heart rate detection, capture, and recognition; software used to detect cognitive load, human emotion and facial expressions; software for delivering personalized and intelligent virtual reality experiences; software for recording, storing, transmitting, receiving, displaying and analyzing data from wearable computer hardware; software for use in creating and designing virtual reality software; software using artificial intelligence and machine learning for use in virtual reality software development; virtual reality devices, namely, virtual reality headsets; mixed reality devices, namely, mixed reality headsets; virtual and mixed reality hardware, namely, controllers for virtual and mixed reality headsets; computer hardware for detecting objects, user gestures, and commands; virtual reality devices, namely, virtual reality headsets; mixed reality devices, namely, mixed reality headsets; virtual and mixed reality hardware, namely, controllers for virtual and mixed reality headsets; computer hardware for detecting objects, user gestures, and commands.