Posts by jefftk@mastodon.mit.edu
(DIR) Post #APbtCDmeouBaTaCJKS by jefftk@mastodon.mit.edu
2022-11-14T13:45:36Z
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The schelling.pt server seems to have lost its domain, so I've moved to mastodon.mit.edu
(DIR) Post #APbtCETCGkDIbW6HdQ by jefftk@mastodon.mit.edu
2022-11-14T22:25:43Z
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schelling.pt seems to have recovered its domain, but I've decided to stay on mastodon.mit.edu. I've initiated account transfer
(DIR) Post #APcBkThVwgn6rYHCSG by jefftk@mastodon.mit.edu
2022-11-15T03:15:57Z
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@pee_zombie thanks for hosting me and introducing me to the fediverse!
(DIR) Post #AQ27TS3dQ0Su3p2JOa by jefftk@mastodon.mit.edu
2022-11-27T03:05:53Z
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@tw @crschmidt @cshabsin link preview bots all ignore robots.txt, so mastodon is at least following precedent here.Except that I think Mastodon's implementation is wrong: on a centralized network the preview is created at the 'request' of the person sharing, so robots.txt doesn't apply. But here it's created fully automatically, so it really should apply. The fix would be to capture the site at sharing time and send it along in the post, which is also more efficient (though prone to abuse?)
(DIR) Post #AQ27TTTu7p4YTaKnyq by jefftk@mastodon.mit.edu
2022-11-27T14:28:47Z
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@crschmidt @tw @cshabsin Follow-up https://mastodon.mit.edu/@jefftk/109416209502343043 https://www.jefftk.com/p/mastodons-dubious-crawler-exemption https://github.com/mastodon/mastodon/issues/21738
(DIR) Post #AQ2DvMKwsgTY9RpEeW by jefftk@mastodon.mit.edu
2022-11-27T16:42:47Z
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@PaterSnape @crschmidt @tw @cshabsin link to one of the posts that seem blocked?
(DIR) Post #AQqb4KPxOm3xeePUIq by jefftk@mastodon.mit.edu
2022-12-21T21:33:48Z
0 likes, 1 repeats
Some personal security recommendations, and the reasoning behind them. Bottom line:1. Use a password manager that fills in fields automatically.2. Configure 2FA with security keys.3. Read "sign in with provider" (oAuth) screens carefully.4. Encrypt your laptop.5. Be cautious with inbound communication.https://www.jefftk.com/p/not-getting-hacked
(DIR) Post #ARQaB0F5MhUNHG7smW by jefftk@mastodon.mit.edu
2023-01-08T02:48:39Z
0 likes, 1 repeats
I think the online ads ecosystem is most likely illegal in Europe, and as more decisions come out it will become clear that it can't be reworked to be within the bounds of the GDPR: https://www.jefftk.com/p/can-ads-be-gdpr-compliant
(DIR) Post #ARQsrUDS71w1ZnlmBU by jefftk@mastodon.mit.edu
2023-01-08T12:06:41Z
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@FroehlichMarcel personalization isn't the only GDPR issue; there is also ad fraud detection which is more fundamental.On personalization, the main downside of contextual targeting is that for most sites (ones without a clear commercial tie-in) it will bring in much less money, reducing the fraction of sites that can run without paywalls (or run at all).But, unlike with ad fraud, I don't think prohibiting ad personalization by default is an overreach by regulators.
(DIR) Post #ARQv5qqixUFJje7GK0 by jefftk@mastodon.mit.edu
2023-01-08T12:31:42Z
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@FroehlichMarcel effectively detecting ad fraud requires collecting lots of personal data
(DIR) Post #B2gdD4b2x44KXN9e9g by jefftk@mastodon.mit.edu
2026-01-26T19:13:41Z
1 likes, 1 repeats
Do I know anyone who wants a far-UVC lamp? Some friends of mine are giving away a bunch, if you'd actually use it: https://aerodrop.org
(DIR) Post #B2gdDBAMWfsoudiw2C by jefftk@mastodon.mit.edu
2026-01-26T19:14:32Z
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More context on this tech: https://faruvc.org
(DIR) Post #B2gfwUyztWWJJR95o8 by jefftk@mastodon.mit.edu
2026-01-26T20:00:22Z
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@cjd The ideal placement for regular light and far-UVC is different, so integrating them into the same fixture isn't ideal.
(DIR) Post #B2gfxfZK1QMEQwh7QG by jefftk@mastodon.mit.edu
2026-01-26T19:59:43Z
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@cjd 222nm AlGaN LEDs do exist, but they're super low output. There are some decent prototypes at 226nm, and then commercial ones in the 230-235nm range. Unfortunately, risk to people goes up a *lot* as you increase wavelength, so I'm not currently convinced that any commercially available UVC LED is "far" enough to be safe to shine on humans.
(DIR) Post #B2gg0DH1g9bTXxLjqC by jefftk@mastodon.mit.edu
2026-01-26T20:05:16Z
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@cjd Regular 254nm UVC, basically a standard (mercury vapor) fluorescent light with the fluorescent coating left off and UV-transparent glass, is indeed way cheaper. But it's also not safe to shine on humans, even for relatively short times.Now, it's still a great option for air cleaning, especially in spaces with high ceilings, but you need to position it carefully so it's shining upwards and not on people.
(DIR) Post #B2iFPZiL4d99wDuiiO by jefftk@mastodon.mit.edu
2026-01-27T14:10:59Z
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@cjd I hadn't previously heard of UV blood irradiation, but looking into it now it looks like that's all longer wavelengths.