When does the 180-day retention period start? Correct understanding of the rolling window

A common question has been raised: “Our store has only been open for three months. Public security requires 180 days of logs. Do we need to wait until we have accumulated half a year of records before we are ready for inspection?” This sounds reasonable at first glance, but it reflects a misunderstanding of “rolling retention”. Preparing based on this wrong interpretation may lead to compliance failures during audits.

1. Rolling window: complete records for the preceding 180 days at any time

The correct definition of the 180-day requirement: under the rolling retention rule, the system must maintain complete data for the 180-day window counting backward from any given moment. It is not a fixed period starting from the store opening date. Instead, the window keeps moving forward continuously, always covering the most recent 180 days.

For example: if inspected today, auditors check the 180 days before today. If inspected tomorrow, they check the 180 days before tomorrow. The window shifts forward day by day. The oldest day drops out, and the newest day is added. The benchmark for inspection is always “the past 180 days from now”, not “whether the store has been operating for 180 days”.

There is another frequent confusion: some operators tie the 180-day rule to real-name registration, thinking real-name verification is unnecessary until the 180-day mark. In fact, real-name authentication is triggered instantly every time a guest connects to Wi‑Fi. Authentication and the log rolling window are two separate mechanisms. Treating the rolling window as a fixed static time range is the root cause of most misunderstandings.

2. New data in, expired data out — the cycle keeps moving

The operating logic of the rolling window can be summed up in eight words: new data enters, expired data exits.

Every day, newly generated internet logs are added to the window. Meanwhile, records older than 180 days are removed from the retention scope. Operators only need to guarantee the integrity of the latest 180-day dataset, rather than permanently storing all logs since opening. This is beneficial for stores: it meets regulatory requirements without unlimited storage expansion.

Similarly, real-name authentication runs daily. Guests complete verification immediately upon Wi‑Fi access, and identity information is recorded on the same day. There is no such thing as “collecting identities after half a year”. The rolling window governs the time span of logs, while real-name authentication captures identity for every access. Both require regular, continuous operation rather than emergency remediation.

With this logic, the question “what if we have only opened for three months?” has a clear answer. For the first three months of operation, the window contains those three months of complete, searchable records. Once the store has operated for 180 days, the window will be fully filled with 180 days of data seamlessly.

3. How local 180-day rolling retention works on the Dream Gateway

The AINOPOL Dream Gateway stores guest internet access logs locally on the hard disk for no less than 180 days. Log fields include phone number / ID number, terminal MAC, IP address, login time, visited URLs and uplink/downlink traffic.

In terms of the rolling window mechanism: the Dream Gateway maintains this moving window locally. New logs are written in real time, and expired logs are automatically purged. Records retrieved or exported at any time are the complete dataset within the current valid window.

Store operators only need to perform basic self-maintenance: do not manually clear the log database. Deployed behind the original network, the Dream Gateway handles Portal real-name authentication and local log storage, forming a full compliance closed loop.

Real-name authentication and log retention are matched as a set. The Dream Gateway Portal captures identity information instantly for every connection, and the local hard disk retains logs following the rolling window rule. Whether guests are new or returning, identity and log records are automatically linked. Administrators do not need to manually schedule deletion or recording tasks.

4. Automated local operation, low maintenance burden

Some operators worry about local storage: will logs be forgotten to be cleaned up, or will storage space run out? This concern is unnecessary. The Dream Gateway automatically manages the rolling window: new data is added and expired data is removed without manual intervention.

The most stable state for a venue is continuous regular operation of real-name verification and log retention. Guests authenticate on Wi‑Fi connection, and all online activity is logged. The window always covers the latest 180 days. The logic is identical for newly opened stores (only three months old) and long-established venues. The only difference is the total volume of accumulated data. Relying on automatic local rolling retention is far more reliable than rushing to fabricate records before inspections.

5. Security protection: mitigating boundary risks for store networks

Stores host diverse Wi‑Fi users and untrusted terminals. Real-name authentication and log retention alone are not enough. The Dream Gateway integrates built-in firewall, intrusion detection and malicious access blocking capabilities. It blocks scanning attacks from outside and prevents lateral movement between internal terminals.

Rogue access detection automatically identifies and blocks unauthorized routers and portable hotspots, preventing guests from privately extending the network and breaking the audit chain. Isolation for guest networks can be configured to separate the Wi‑Fi segment from sensitive business networks such as cashier and surveillance systems, stopping guest terminals from accessing critical business resources. Abnormal traffic alerts notify administrators promptly of bulk downloads, suspicious outbound connections and other risky behaviours. Beyond audit traceability, this adds active protection to keep network access within boundaries.

Many store operators get stuck on the definition of the “180-day rolling window”. Some mistakenly believe new venues can delay compliance, while others only focus on log storage and ignore network boundary security. Compliance is not a task to be patched up before inspections; it is a continuous, regular mechanism. Built on all-optical infrastructure, powered by audio & video engine, and protected by robust security capabilities, AINOPOL delivers an integrated “connectivity & security” solution. The Dream Gateway supports real-name verification, automatic rolling log retention and network security isolation in one appliance. No complex additional servers are required. Simple deployment and automatic operation help venues fulfil the requirements of Ministry of Public Security Decree No.82 and Decree No.176 daily, safeguard audit compliance and avoid penalties.

FAQ

Q: Will a store that has operated for less than 180 days be deemed non-compliant?
A: The rolling rule requires complete records within the 180-day window counting backward from any inspection time. For venues operating fewer than 180 days, the window only contains the available historical data, which is acceptable as long as those records are complete and retrievable. Operators are not required to wait until 180 days of data have accumulated.

Q: Will logs older than 180 days disappear automatically?
A: Under the rolling window mechanism, expired records exit the retention scope. If local regulators require a longer retention period, confirm the policy with the solution provider.

Q: Is a single local copy sufficient?
A: Local 180-day rolling retention meets the baseline regulatory requirement. Data stays on the on-site gateway for instant retrieval and export. If local authorities impose longer retention rules, consult the solution provider for adjustment.