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Guest WiFi using a QR code

blog.jgc.org

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51–60 of 284 posts

Re: Guest WiFi using a QR code

#51

Post by gravitate »

Brajeshwar wrote: post #5

I started with this quite a long back, way before a separate Guest Wi-Fi was commonplace and we were OK just sharing the Wi-Fi. My ideology with guest at home was to offer Water and Wi-Fi. Guest were happy when Mobile Phone signals were bad (slow) and costly. I've forgotten the tool used but I had a QR-Code for the guest Wi-Fi for a very long time. These days, people don't really care as the Internet speed on their p…

I switched to guest networks after I accidentally casted a browsing session to the TV with Chrome and a Chromecast plugged into the TV. Luckily nothing sensitive was shown but it could’ve been embarrassing with other (NSFW) content shown. The guest networks are segmented and use their own VLAN

Re: Guest WiFi using a QR code

#52

Post by UIUC_06 »

I've done techie things just because they were fun & cool, so this isn't a criticism.

However, having a phone number not your own (or indeed, any number of less than 7 digits) that you can memorize and tell your guests works just as well. Change it as soon as they leave, bada bing, bada boom, done.

Re: Guest WiFi using a QR code

#53

Post by silvestrov »

graton wrote: post #38

It uses the form of: WIFI:T:WPA;S:{ssid};P:{password};; Can generate these on Linux with the qrencode program. Wikipedia has information on this https://en.wikipedia.org/wiki/QR_code#Joining_a_Wi%E2%80%91F... Section of the Wikipedia article: Joining a Wi‑Fi network By specifying the SSID, encryption type, password/passphrase, and if the SSID is hidden or not, mobile device users can quickly scan and join networks wi…

why couldn't they just use normal URL query param escaping? Always reinventing the wheel, badly.

WIFI:t=wpa&s=My%20Network&p=secret%20word

would have been much better.

Re: Guest WiFi using a QR code

#54

Post by peteri »

santamex wrote: post #35

Standard in the AVM FRITZ!Box. https://avm.de/ratgeber/wlan-zugang-teilen-mit-qr-codes-geht... Edit: English: https://en.avm.de/guide/how-to-share-your-wi-fi-access-with-...

Thanks for that, I have some visitors next week and I knew I'd seen that as a feature somewhere (just couldn't find it in the UI)

Re: Guest WiFi using a QR code

#55

Post by ircop420 »

UIUC_06 wrote: post #52

I've done techie things just because they were fun & cool, so this isn't a criticism. However, having a phone number not your own (or indeed, any number of less than 7 digits) that you can memorize and tell your guests works just as well. Change it as soon as they leave, bada bing, bada boom, done.

Well, firstly you have to have a password of >=8 chars for WPA. Secondly, having such a short non-complex password is going to easily be crackable with a deauth and 3-way handshake capture attack. Would easily crack on a 5 year old laptop in minutes even w/o GPU.

Re: Guest WiFi using a QR code

#57

Post by ircop420 »

graton wrote: post #38

It uses the form of: WIFI:T:WPA;S:{ssid};P:{password};; Can generate these on Linux with the qrencode program. Wikipedia has information on this https://en.wikipedia.org/wiki/QR_code#Joining_a_Wi%E2%80%91F... Section of the Wikipedia article: Joining a Wi‑Fi network By specifying the SSID, encryption type, password/passphrase, and if the SSID is hidden or not, mobile device users can quickly scan and join networks wi…

Can you encode a BSSID (MAC-based) or just the ESSID (assigned name)? The formatting isn't very pleasant I imagine for putting a MAC in with all those backslashes..

Re: Guest WiFi using a QR code

#58

Post by ircop420 »

silvestrov wrote: post #53
graton wrote: post #38

It uses the form of: WIFI:T:WPA;S:{ssid};P:{password};; Can generate these on Linux with the qrencode program. Wikipedia has information on this https://en.wikipedia.org/wiki/QR_code#Joining_a_Wi%E2%80%91F... Section of the Wikipedia article: Joining a Wi‑Fi network By specifying the SSID, encryption type, password/passphrase, and if the SSID is hidden or not, mobile device users can quickly scan and join networks wi…

why couldn't they just use normal URL query param escaping? Always reinventing the wheel, badly. WIFI:t=wpa&s=My%20Network&p=secret%20word would have been much better.

Data is expensive in QR land or your resulting QR code becomes larger in size, requiring more physical space to display. URL encoding has a lot of overhead. Also '\' escaping has preceded the existence of URLs. I'm not sure who is doing the reinventing here.

Re: Guest WiFi using a QR code

#60

Post by vel0city »

I had a lot of WiFi QR codes around the house and in the office. People seemed to often just ask for the WiFi password instead of bothering to figure out how to scan the QR code. Maybe things are different post-COVID where QR-code menus became the norm for a while, but in the past people seemed to not really care or understand QR codes.
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