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Work and digital questions, from “huh?” to “got it.”

From AI, IT and phones to working better, the back office, and people and work. The questions that come up at work, and the words and systems you half-know but could not quite explain — made clear, from a practical angle.

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Good places to start

Phones and mobile6 min readWhat Is a SIM Card? How Your Phone Gets on the NetworkA SIM card is the small chip that tells the mobile network your phone may use a particular contract. How it relates to your phone number, the difference between a physical SIM and an eSIM, what still works with no SIM, SIM sizes, and SIM locks.ReadPhones and mobile7 min readWhat Is a Low-Cost SIM? Why It Is Cheaper Than the Major CarriersIn Japan, a "low-cost SIM" is mobile service from an MVNO that rents network capacity from a major carrier. Why it costs less, how it differs on busy-hour speed, shop support, calls and family plans, and what to check before switching.ReadIT basics7 min readWhat Is CSV? How It Differs From Excel, and Why It Breaks So EasilyCSV is a table written as plain text. How it differs from an Excel file, why text encodings garble it, why leading zeros, dates and long numbers change on their own, and how to open and hand over CSV files safely.Read

A different set of three introductory columns each time you visit.

Columns

All columns (139)

  1. Being prepared13 min readWinter preparedness in Japan, 2026: what homes and small workplaces should check from November to FebruaryHouse fires, accidents in the bath, snow-clearing accidents, power and water cuts. The latest figures from the Fire and Disaster Management Agency and the Consumer Affairs Agency, a month-by-month plan from November to February, priorities for households, older relatives and small workplaces, and the first 30 minutes of a blackout, heavy snow, a water cut or an earthquake.
  2. Being prepared4 min readSaving electricity at home in winter: air-conditioner settings, filters, windows, kotatsu and standby powerThe quickest way to cut winter electricity use is to start with heating. Based on estimates from Japan's Agency for Natural Resources and Energy and the Government of Japan's public relations site: air-conditioner temperature and filter cleaning, windows and curtains, kotatsu and electric carpets, standby power and lighting, with the assumptions behind each figure.
  3. Being prepared4 min readPreparing for winter blackouts and heavy snow: heating, carbon monoxide, cars and phone batteriesIn winter blackouts and heavy snow, the biggest dangers are often carbon monoxide poisoning and getting stranded in snow, not just the cold. Based on guidance from Japan's transport ministry, Meteorological Agency, Consumer Affairs Agency and NITE: heating during a blackout, generators and snow-blocked exhausts, when to stay home, and making your phone battery last.
  4. Being prepared4 min readThe early hours of 8 November earthquake (up to shindo 5+): what to check now if you felt it stronglyAt around 1:04 a.m. on 8 November 2026, a magnitude 5.7 earthquake centred in western Shizuoka Prefecture produced shindo 5+ (5 upper) in Chita, Aichi Prefecture. Based on the Japan Meteorological Agency's reports: what to check over the next few days, from furniture, gas, electricity and glass to the house itself, plus reaching family and dealing with rumours.
  5. Being prepared5 min readNankai Trough Earthquake Extra Information: what "warning", "advisory" and "under investigation" mean, and what to doThe Nankai Trough Earthquake Extra Information tells you the chance of a megaquake is higher than usual. It is not a prediction. Based on official guidance: the four keywords, what to do at home and at work, the first issuance in August 2024, and how it differs from the Hokkaido/Sanriku advisory.
  6. Being prepared4 min readPreventing power bank fires: buying, charging, disposing and the airline rulesAccidents involving power banks and other lithium-ion battery products reported to Japan's NITE are rising. Based on guidance from NITE, the Consumer Affairs Agency, METI and the transport ministry: checking the PSE mark and recalls, charging and storage, what to do with a swollen battery, safe disposal, and the carry-on rules in force since April 2026.
  7. Being prepared4 min readWhen J-ALERT issues a ballistic missile warning: what to do outdoors, indoors and in a carJ-ALERT, Japan's nationwide instant warning system, sends urgent information from the national government all at once. What to do outdoors, indoors or in a car if a ballistic missile warning is issued, how it reaches your phone, how the messages progress and what to check in advance, based on Cabinet Secretariat and FDMA guidance.
  8. Being prepared4 min readHow many days of supplies at home and at work? Rolling stock and people with special needsJapan's Prime Minister's Office and the Ministry of Agriculture, Forestry and Fisheries recommend at least 3 days of household supplies, and a week for large-scale disasters. Water amounts, the rolling-stock method, preparing for infants, older people and food allergies, and the 3-day workplace stockpile under Tokyo's ordinance.
  9. Being prepared4 min readChoosing and using home heaters: whole room or close to the body, ventilation and running costsHeaters are easier to choose once you split them into those that warm the whole room and those that warm the area around you. Based on guidance from Japan's Agency for Natural Resources and Energy, the government's public relations site and the Consumer Affairs Agency: what air conditioners, fan heaters, kotatsu and electric carpets do, when to ventilate, how to work out electricity costs, circulating warm air, and humidity.
  10. Being prepared4 min readTwo winter risks at home: bathing accidents and house fires, and how families can prepareWinter is when bathing accidents and house fires increase. Based on guidance from Japan's Consumer Affairs Agency, Fire and Disaster Management Agency and NITE: handling the temperature gap between rooms and the bathroom, bath temperature and time guidelines, testing smoke alarms and replacing them after 10 years, and heater and clothing-fire precautions for homes with older family members.
  11. Being prepared5 min readFixing furniture and seismic circuit breakers: cutting earthquake injuries and power-restoration fires at homeAccording to the Tokyo Fire Department, about 30-50% of people injured in recent earthquakes were hurt by furniture that toppled, fell or slid. Based on materials from the Fire and Disaster Management Agency, the Tokyo Fire Department and the economy ministry: choosing and combining fixings, arranging bedrooms, children's rooms and doorways, types of seismic breaker, and finding local subsidies.
  12. Being prepared13 min readEarthquake preparedness in Japan, 2026: before, during and after the shakingThe latest probabilities and damage estimates for the Nankai Trough and a Tokyo-area quake from Japan's earthquake research body and the Cabinet Office, how much furniture fixing, seismic breakers and retrofitting reduce the damage, what to do during and in the first hour after shaking, and how to spend the week after a special advisory.

Read together

Reading orders and series

Columns grouped by theme, best read together. Open a card to see its list.

Reading orders

Attendance and payroll, from the start6 columns

How attendance, HR and payroll connect, when to move from spreadsheets to a system, the payroll flow, overtime pay and leave tracking.

  1. What Breaks When Attendance, HR and Payroll Are Separate
  2. When Excel Stops Working for Attendance Tracking
  3. Payroll, step by step: from closing attendance to paying out
  4. Setting the payroll cut-off and payday without squeezing the work
  5. How overtime pay is calculated, and why attendance must sort it first
  6. Paid leave: what happens when you track it separately from attendance
Going paperless, from the start6 columns

The basics of keeping electronic transaction data, where to keep it, tidy PDFs and file names, OCR versus AI OCR, and the invoice workflow.

  1. Storing Electronic Transaction Data Is More Than a Folder of PDFs
  2. Keeping transaction documents: cloud or desktop
  3. Why filenames alone are a poor way to manage PDFs
  4. File naming rules that a whole company can actually follow
  5. OCR and AI OCR: What Each One Actually Does
  6. Running invoices through AI OCR, and why a human step stays
Security for a small company, from the start6 columns

What to do first, how to split permissions, why sync is not backup, what HTTPS does and does not cover, IP restrictions and WAF.

  1. Security basics for a small company, in the order worth doing them
  2. Stop making everyone an administrator: least privilege in a small team
  3. Cloud Sync Is Not a Backup
  4. What HTTPS Does Not Protect You From
  5. Do You Really Need IP Address Restrictions?
  6. What a WAF Is, and How It Differs From a Firewall

Series

Everyday digital snags, at work and at home10 columns

App data, full storage, blacked-out PDFs, QR codes, asking AI, notifications and the latest version of a file — ten columns written so that, without any technical background, you finish with one thing you can check.

Keeping and organising

Using things safely

Less busywork

Getting ready for AI and cyber attacks10 columns

Repeated unauthorised access, ransomware, attacks delivered through ads, reading update notices, fixes to the software sites are built on, putting company documents into AI, AI agent permissions, prompt injection, and what AI can take on versus what people must check — ten columns on what to ask the people and providers responsible, checked against official sources and published research.

Protecting sites and data

Using AI at work

Protecting your devices

YouTube questions, answered8 columns

Copyright claims, unlisted versus private, Shorts views, Studio numbers, AI disclosure, recommendations, notifications and blurry new uploads — eight columns on what to check, and in what order, based on YouTube's own help pages.

When you upload and share

When you watch and read the numbers

Phones and mobile lines: what to check when something goes wrong7 columns

A lost phone, no signal, a SIM that is not detected, how far your data goes, slow speeds at busy times, choosing a plan and what to check before upgrading — seven columns on what to check first, based on official information from Apple, Google and Japan's Ministry of Internal Affairs and Communications.

When something goes wrong

When choosing or reviewing a plan

Staffing and running the floor10 columns

New hires who do not stay, seasonal peaks, sudden vacancies, rising overtime — ten columns for teams short of hands, written from the side of dividing up the work and keeping attendance and handover records.

  1. Why new hires keep leaving, and what is happening on the floor
  2. Short-Staffed Only in the Busy Season? Where to Start Preparing
  3. Breaking "Only She Can Do It" Into Tasks You Can Hand Over
  4. A Sudden Resignation or Leave: Keeping the Work Moving
  5. Work Your Full-Time Staff Need Not Do: Three Ways to Sort It
  6. Rising overtime may be telling you that you are short-staffed
  7. Hiring Older Workers: Match the Work, Not the Age
  8. Beyond the 8-Hour Day: Building Work Around Short Shifts
  9. Dispatch or a service contract? Start with who gives instructions
  10. Local talent: check your conditions before saying "there is nobody"

APOUL does not provide staffing, dispatch or contracting services.

Glossary

Look up a term

Short definitions of the terms used in the columns. Terms with a dotted underline in an article link there too.

AILLMRAGAPICSVSIMeSIMOCRWAFbackup

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