Almost all of the video surveillance systems support remote access via phone and computer. What you need to consider about is wired or wireless security camera system.
Wired security camera system(work 24/7)：Usually we call it PoE security camera system. NVR(the recorder to record and store videos) connect to cameras by Ethernet cables. If you choose PoE system, you need to run cables between NVR and the cameras. Signals will be stable as the system is wired, but running cables between NVR and camera is challenging. If you are looking for PoE system, here is a recommendation: https://www.amazon.com/Kittyhok-Floodlight-Humanbody-Recognize-Recording/dp/B08CXMFDHG/ref=sr\_1\_9?keywords=kittyhok&qid=1637632951&sr=8-9
Wireless security camera system(work 24/7): NVR and cameras connect over WiFi, which means no cables needed between NVR and cameras, which gives you flexbility of mounting cameras. And NVR comes with dual WiFi module, one for connecting cameras and the other for connecting system to Internet over WiFi. Since the cameras work 24/7, so cameras need to be plugged to power outlets nearby using included power adapters. If you are looking for wireless camera system, here is a recommendation for you: https://www.amazon.com/Auto-Track-Wireless-Security-Floodlights-Detection/dp/B09DFYVH57/ref=sr\_1\_1?keywords=yeewise&qid=1637632919&sr=8-1
Wire-free security camera system(motion activated, work only when motion is detected): For wire-free camera system, since cameras are battery-powered, they do not work 24/7. They work only when motion is detected. And you need to change batteries frequently. If you need wire-free camera system, you can look at Arlo https://www.amazon.com/gp/slredirect/picassoRedirect.html/ref=pa\_sp\_atf\_aps\_sr\_pg1\_1?ie=UTF8&adId=A00250443OZ7IR6KZ50VK&url=%2FArlo-Pro-Spotlight-Camera-Wire-Free%2Fdp%2FB08L75YWZK%2Fref%3Dsr\_1\_2\_sspa%3Fkeywords%3Darlo%26qid%3D1637633007%26sr%3D8-2-spons%26psc%3D1&qualifier=1637633007&id=418388903559093&widgetName=sp\_atf
Basically there are three types of security cameras as below, see which is the one you want:
Wired: connected to a power source and the internet by a cable
Wireless: connected to the internet over Wi-Fi, connected to a power source by a cable
Wire-free: wireless cameras connected to the internet over Wi-Fi and powered by batteries
If you are considering purchasing a complete security camera system, there are also some types for your choices:
Wired security camera system(work 24/7)：Usually we call it PoE security camera system. NVR(the recorder to record and store videos) connect to cameras by Ethernet cables. If you choose PoE system, you need to run cables between NVR and the cameras. Signals will be stable as the system is wired, but running cables between NVR and camera is challenging. If you are looking for PoE system, here is a recommendation: https://www.amazon.com/Kittyhok-Floodlight-Humanbody-Recognize-Recording/dp/B08CXMFDHG/ref=sr_1_9?keywords=kittyhok&qid=1637632951&sr=8-9
Wireless security camera system(work 24/7): NVR and cameras connect over WiFi, which means no cables needed between NVR and cameras, which gives you flexbility of mounting cameras. And NVR comes with dual WiFi module, one for connecting cameras and the other for connecting system to Internet over WiFi. Since the cameras work 24/7, so cameras need to be plugged to power outlets nearby using included power adapters. If you are looking for wireless camera system, here is a recommendation for you: https://www.amazon.com/Auto-Track-Wireless-Security-Floodlights-Detection/dp/B09DFYVH57/ref=sr_1_1?keywords=yeewise&qid=1637632919&sr=8-1
Wire-free security camera system(motion activated, work only when motion is detected): For wire-free camera system, since cameras are battery-powered, they do not work 24/7. They work only when motion is detected. And you need to change batteries frequently. If you need wire-free camera system, you can look at Arlo https://www.amazon.com/gp/slredirect/picassoRedirect.html/ref=pa_sp_atf_aps_sr_pg1_1?ie=UTF8&adId=A00250443OZ7IR6KZ50VK&url=%2FArlo-Pro-Spotlight-Camera-Wire-Free%2Fdp%2FB08L75YWZK%2Fref%3Dsr_1_2_sspa%3Fkeywords%3Darlo%26qid%3D1637633007%26sr%3D8-2-spons%26psc%3D1&qualifier=1637633007&id=418388903559093&widgetName=sp_atf
Hope above information helps.