Purpose: To evaluate a digital system for ensuring compliance with patient visitor regulations in hospitals during the COVID-19 pandemic. The digital system was intended to reduce the time required to collect information and vaccination status from people accompanying patients (patient companions) and hospital visitors.Materials and methods: The visitor information management system was jointly established by the Nursing Department and the Information Office and comprised (1) patient companion and visitor login, (2) inspection reminder , and (3) statistical reporting systems. System logins were collected from July 2021 to July 2022 and evaluated to determine whether the system is cost effective.Results: During the data collection period, 270,836 patient companions and 72,148 visitors were registered. Compared with the previous system, nurses spent 64.6% less time logging in each patient companion (t = 7.10, p < .000 ) and 62.4% less time for visitors (t = 8.50, p < .000). Hence, synchronizing and linking inspection reports can reduce the time required for information collection by approximately 63.9% (t = 5.95, p < .000). Conclusion: The information management system can effectively identify sources of infection and reduce the invisible chain of infection while also reducing the amount of clinical work and number of errors. It also integrates patient information and vaccination status to improve hospital management.