ESIM BLOCKCHAIN WEEKPowered by Fizen·Backed by Tether
The Shinjuku skyline in Tokyo with Mount Fuji behind it
Tokyo
5GCall connected · 00:12:04

25 - 26 August 2027  ·  Tokyo Big Sight

WebX 2027, Tokyo

Tokyo runs on apps.
Bring your own data.

Browse. Call. Search. Download. Present.
At home Wi-Fi speed.

$8.027 days · 3GB

Built for conference weeks.

For the people who fly in to work. The flight, the venue, the taxi, the deck, the call and the dinner, on one line.

  • Your work number stays live: this is a second line, not a swap
  • Share it with the laptop on plans that allow hotspot
  • Full speed for video calls, screen shares and big uploads
  • Install in 2 minutes, online 60 seconds after you land
  • Pay by card, Apple Pay or Google Pay on Stripe's secure page
  • One-for-one replacement, 24/7 humans
Taking a call beside a laptop

Everything opens the way it does at home

KakaoTalkNaverTelegramXWhatsAppGoogleInstagramFacebookTikTokZoomSlackChatGPTKakaoTalkNaverTelegramXWhatsAppGoogleInstagramFacebookTikTokZoomSlackChatGPT

The problem

We will not let any of this happen to you

Pricing

The eSIM made exclusively for businessmen

Recommended
7 days · 5GB

The one that covers the whole trip: the week itself, the side events either side of it, and the day you fly.

$10.01
7 days
$8.02
15 days
$17.53
30 days
$25.05
7 days
$27.07

Japan prices are the Fizen eSIM catalog price, checked October 6, 2026. The price at checkout is the one that counts.

Comparison

Plenty of options. The wise ones pick this.

Venue Wi-FiCafe and hotelRoamingPocket routerBlockchain Week eSIM
Holds a video call through the keynoteNoNoYesYesYes
Lets your company VPN throughOften blockedOften blockedYesYesYes
Pulls a 200MB deck without stallingNoSometimesYesYesYes
Follows you to the taxi and the dinnerNoNoYesYesYes
A connection only you are onNoNoYesSharedYes
Ready before you flyNoNoYesCollect at the airportYes, in 2 minutes
What the week costsFree, when it worksFree$84 day pass, or $2,099 a GB without oneHire plus a deposit$10.01

Roaming figures are the published US carrier rates: Verizon TravelPass $12 a day, AT&T $2.05 a megabyte pay-per-use. Yours will differ.

Evidence

Conference Wi-Fi, on the record

Sized for a normal Tuesday

Two to three devices per attendee, and log-ins alone spike past a thousand at once.

rottenwifi.com
Oversold threefold at SXSW

Exhibitors reported the Wi-Fi dropping every time footfall peaked. Reported as the pattern at nearly every large venue.

deadzones.com
Cloning it is a catalogued attack

Evil Twin has its own MITRE ATT&CK entry. DEF CON's Wall of Sheep lists what gets picked off conference Wi-Fi.

MITRE ATT&CK T1557.004

Here for you, with integrity

1-for-1 guarantee

If it does not work you get a replacement, free, for the whole trip and not only on day one.

2-min setup

Scan the QR at home. Nothing starts counting until you land.

Refund on unused

Trip fell through before you activated it? Hand it back.

24/7 human support

A person, not a bot loop, for the whole trip.

Local knowledge

What actually catches people out

Getting about

A Suica or Pasmo in Apple Wallet covers trains, buses and convenience stores. Set it up before you fly.

Side events

Tokyo's week spreads across Shibuya, Roppongi and Marunouchi. Two events in one evening can be forty minutes apart.

Paying

Card is fine in the business districts. Keep ¥10,000 in cash for small restaurants, which are still cash-only more often than you expect.

Wi-Fi

Station and cafe Wi-Fi asks for an email, caps the session, and drops you at the gate. It is not somewhere to take a client call.

Check

Thirty seconds, before you pay

Dial *#06#

If an EID appears, your phone takes an eSIM.

No EID? Don't buy this. Buy a physical SIM at the airport instead.

An office tower in Marunouchi, Tokyo

Questions

Straight answers

When does the clock start?

Not at purchase. Buy today; your days begin the first time the eSIM connects in the country.

How long does setup take?

About two minutes. We email a QR code; scan it before you fly.

What happens when the data runs out?

Fixed plans keep working at 384 kbps, enough for chat and a map, not for a video call. Unlimited runs at up to 10 Mbps on KDDI.

What if something goes wrong?

One-for-one replacement, and any unused plan is refunded.

Can I hotspot?

It depends on the plan, and checkout shows it before you pay.

Flying soon. Is your data ready?

Install it tonight over home Wi-Fi. It switches itself on the moment you land at Haneda or Narita.

Contact

Questions before you buy?

Flying on after Tokyo?

Your next country is covered too.

Thailand, USA, Europe, China, Indonesia, Philippines and 80+ more, from the same team at fizen.io.

Browse eSIMs at fizen.io
7 days · 5GB · $10.01 Buy now, activate when you land in Tokyo.