Questions tagged [technology]

Questions about how Judaism interacts with technological innovations.

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19 votes
4 answers
1k views

What halachic issues are involved in turning off a mobile phone while praying the quiet Amidah?

A person realises during his quiet Amidah, that he has not turned off his mobile phone. He is worried lest it ring while he is praying. On the other hand, turning it off will interfere with his ...
9 votes
3 answers
467 views

Leaving a phone perpetually on on the Sabbath

I have never been sufficiently religious to understand everything on this site without help from friends or family, but a question was asked by a non-Jewish friend that I was unable to answer, so I'm ...
25 votes
3 answers
11k views

What makes a smart phone "kosher"?

I have to admit that my phone is far smarter than me, and I am not "with it". So, I was surprised when a neighbor who is sending his kid to Israel told me that her kid needs a special "kosher" smart ...
3 votes
2 answers
252 views

Is there an online source for trope occurrences?

As a Torah reader, I like to find nuances and inherent meanings in trope (cantillation) nuances and "unusual" occurrences in the Torah. For example I'm looking for all the places that have two ...
0 votes
1 answer
80 views

Online Torah Scroll [closed]

Shalom! Is there such a thing as an online virtual simulation of a Sefer Torah that could be rolled, unrolled, and read from? (For a novelty I suppose) That would be so interesting. Is this idea ...
4 votes
2 answers
417 views

Can a healthy person use a shabbos elevator?

Can a person who has no health issues make use of a shabbos elevator?
2 votes
0 answers
51 views

If dairy and meat come from the same Star Trek replicator, would it be Kosher? [closed]

Apologies for my limited understanding of Judaism, but as far as I am aware, Jewish dietary laws prohibit mixtures of meat and milk. I remember a friend's housemate requiring a second sink and set of ...
4 votes
1 answer
2k views

Apple Watch on Shabbat

Tech experts: Is there any way in which the Apple Watch could be used by shomrei Shabbat with limited functionality? Note: this question does not seek to ascertain whether the full gamut of features ...
5 votes
1 answer
236 views

Cryptocurrency and Ribbis - Celsius Network

With the rising popularity of DeFi (Decentralized Finance) and cryptocurrencies I am wondering about the interest bearing wallets such as Celsius that will give returns for holding or staking coins. ...
6 votes
1 answer
4k views

What technology did King Solomon have?

I'm looking for sourced statements of modern technology possessed by King Solomon. So far I have seen: An answer here quotes the idea that King Solomon had a flying carpet of sorts. The Ben ...
9 votes
1 answer
171 views

What is the status of professional video game players?

A friend remarked to me that playing video games professionally today is the equivalent of professional gamblers in the times of the talmud, specifically in that both are not involved in "Yishuvo shel ...
0 votes
0 answers
34 views

May a Jew deliver non-Kosher food to another Jew? [duplicate]

With the increase in usage of food delivery services such as instacart or uber eats many people now have their food delivered to them. I would like to know if any contemporary authorities discuss the ...
7 votes
3 answers
382 views

What tool did Raban Gamliel use to determine how close his ship was to the port?

In Mishna Eruvin 4:2, Raban Gamliel tells his colleagues "I looked out from our ship just before it got dark, and determined we were already within 2000 amot of the harbor." Bartenura says ...
0 votes
1 answer
53 views

Was linseed (flaxseed) oil in common use in time of the Mishna/Gemara?

Go to any location 200+ years old in America, and they'll tell you all about the value of linseed (flax seed) for paint. Which makes me wonder, was it a "thing" in the time of the Talmud? ...
1 vote
0 answers
32 views

Kol Isha specifically from/of a woman? [duplicate]

I have been reviewing the questions related to Kol Isha (including links about parrots, men with feminine voices, radio recordings and Siri singing) but I was asked whether halacha has dealt with ...
0 votes
0 answers
51 views

Revisiting cryonics and halaha

I thought it would be interesting to revisit the halachic permissibility of cryonics. This previous answer mentions a view that requires >50% chance of the preserved person being brought back to ...
10 votes
2 answers
482 views

Changeable page number sign for shul

In the shul (synagogue) I went to growing up, and in other shuls I've been to, they had a device for displaying the current page number. It was a wall-mounted box with three windows, behind each of ...
2 votes
1 answer
95 views

Giving a divorce (get) written on a tablet screen

Can a person divorce his wife by giving her a get written on a tablet screen?
3 votes
0 answers
102 views

Digital piracy of difficult to acquire products

The following discusses copying an item that is being sold by its creator (https://torah.org/learning/honesty-class64/) Rabbi Moshe Feinstein ztl said that it’s not permitted to copy any item that is ...
4 votes
1 answer
137 views

Were there rabbinic objections when grave digging went from manually-powered to machine?

There are lots of responsa when matza-baking machines were introduced instead of everyone doing it by hand. When power machinery came up to make grave-digging faster/easier, did any rabbis object that ...
5 votes
0 answers
270 views

Can you buy chametz during Pesach that will be delivered after Pesach?

As an example, during Hol Hamo'ed Pesach, could you buy chametz online knowing that it will arrive after Pesach? My assumption is that it would be OK, as the buyer doesn't actually own the product ...
9 votes
4 answers
3k views

Can you use electricity on Yom Tov

Yom Tov is slightly different than Shabbat. For example, on Shabbat one cannot cook, but one can cook on Yom Tov provided that it is from an existing flame. My question is this... Let's say I have ...
6 votes
2 answers
864 views

Using the Coravin Wine Preserver on shabbat

There is a new device called the coravin which allows one to insert a needle into a cork of a wine bottle and the wine flows through the needle by using argon gas (protects quality of wine) and by ...
6 votes
2 answers
185 views

Watching a virtual church service

The prohibition I have read about regarding churches centers around going "into" a church (see Q and A's here, for example). Is the underlying prohibition about being present in the church, ...
2 votes
1 answer
139 views

How can ultrasound be used to resolve a niddah question?

In this post Rabbi Slifkin makes the following statement Somebody once asked the great and underappreciated Rav Nachum Rabinovich, shlita, about whether one can use ultrasound to resolve a niddah ...
5 votes
2 answers
205 views

Best App to Track your Mikvah Dates

Looking for the best period tracker and mikvah (לוח מקווה) calendar to simplify my mikvah calculations. It should be available on Android phone and able to send reminders and notifications about ...
19 votes
2 answers
300 views

Can a "brain controlled" prosthetic be used on Shabbat?

New prosthetics are controlled by brain waves which seem to make the prosthetic an extension of the body in an "organic" way, in that we control all of our own limbs through the same brain waves and ...
7 votes
1 answer
288 views

Egg donation within a family

If a woman were to donate her eggs to a family member who, unfortunately, could not conceive on her own, would that invoke considerations of halachic incest if the man who would fertilize the egg ...
5 votes
1 answer
1k views

Removing facial hair by laser treatment (for a man)

May a man remove his facial hair with a laser treatment? (that is the hairs that are normally ossur to remove by way of a razor.)
32 votes
4 answers
3k views

May one use a computer script or robot to do something specifically on Shabbos/Yom Tov?

May one run a program or machine that will operate on Shabbos, either by setting a timer to activate once Shabbos has started, or by leaving it running continually? What if the action is one that is ...
3 votes
1 answer
132 views

Would there be any maaser derabbanan on hydroponically grown plants?

Related: What bracha should be made on hydroponics/aeroponics? This question was originally mentioned by Rabbi Eliyahu Fink in his Daf Yomi shiur (Shabbat 128). He was talking about tevel d'rabanan -...
7 votes
3 answers
441 views

Can one post a negative comment on a site such as Google or Yelp?

This answer states Chafetz Chaim's 7 rules regarding to'elet for Lashon Hara. When a service provider posts his business on a ratings site such as a doctor's site like Zocdoc, or one of the travel ...
2 votes
1 answer
415 views

Making up a synagogue calendar manually is tedious work. Which software can do the calculations automatically?

Lots of synagogues print up a customized calendar every year. (Sample.) Such a calendar includes shul-specific information (e.g. service times and maybe a weekly class or two) and general information (...
5 votes
3 answers
289 views

Halachah: What's the difference between this site and looking up a question in a book?

Per our oft-cited FAQ, and our frequent use of the disclaimer to consult one's own rabbi in matters of practical Halachah, we do not, as a matter of policy, accept questions, or provide answers, ...
8 votes
5 answers
2k views

Website for tzuras hadaf

A couple years ago, I chanced upon a site for creating a tzuras hadaf layout on the Gemara. The website used a custom markup (using tags) to create the layout, and it was a community project that ...
0 votes
1 answer
44 views

Tele-kovod?/ How do halochos of kovod and hidur (honor/ respect) apply virtually?

Must one stand for a Rabbi present by video conference?
20 votes
2 answers
1k views

Attending a Siyum virtually

If one attends a Siyum virtually, whether by phone, Skype, or some other means of mass communication, can one partake of the Se'udath Mitzvah (relevant to allow eating meat during the 9 Days for ...
14 votes
5 answers
1k views

Can you leave video chat on over Shabbos?

Basically: Can you leave your computer with video chat on (to another person) on over shabbos? And what if there's also audio? For example a relative in the hospital, relatives that in a far away ...
2 votes
1 answer
79 views

Any suggestions for documentaries/videos related to the stories of the sages?

I was curious if anyone would know of some good video resources related to learning about the various Jewish sages of our history. They can be biographical or they can be related to the philosophies ...
0 votes
0 answers
26 views

G-ds name online [duplicate]

On a google doc during an assignment with friends who do not understand the intricacies of Judaism, someone wrote g-d's names pronunciation, I did not realize what I was doing and deleted it, was this ...
8 votes
4 answers
377 views

Microphone for Meggilah

Can one be Yotzeh Meggilah on Skype or webcast or through a microphone or telephone is there a difference between each? Does a Hearing Aid disqualify a person from being Yotzeh the Laining?
7 votes
1 answer
195 views

Microphones on Shabbat

What is the Halacha re LISTENING to someone speaking in a microphone on Shabbat. For example if I walk into a room and someone is lecturing/speaking on a microphone an I permitted to listen
11 votes
3 answers
564 views

Davening with a Minyan in China

I regularly travel to China (and other countries) for business purposes. I know there are other Jewish travelers who do the same which I sometimes meet on the way. I think that if we have the right ...
5 votes
4 answers
2k views

Looking for daf yomi app recommendations

Are there any good daf yomi apps? I saw the video for the artscroll app but it doesn't seem to be out yet. Any recommendations?
1 vote
0 answers
42 views

Is there any prohibition on using tracing chips under the skin?

With the advance on technology, ethical discussions are being raised regarding implants under one's skin, like a parent, worried about the whereabouts of their kids, or companies thinking about the ...
2 votes
1 answer
87 views

What are the halachot for programming shemot hakodesh?

What are the halachot for programming shemot hakodesh? Must special care or actions be taken in a codebase which handles the names of HaShem? Does a program written to generate shemot need to be ...
2 votes
0 answers
66 views

Do decentralized arbitration markets satisfy mitzvah to set up courts?

Do decentralized arbitration markets like Aragon satisfy the noahide mitzvah to set up courts? Context: Aragon is a decentralized arbitration market, rather than being tied to any one nation-state it ...
2 votes
1 answer
478 views

May one use a measuring device on Yom Tov?

I think I have heard that one should not measure or weigh things on Shabbat. However, I wonder if this rule applies to Yom Tov related food needs, e.g., can one stick a food thermometer into meat to ...
2 votes
1 answer
318 views

Is it permissible to use the "Tahor" bedikah app?

Tahor App is a Miami-based organization which created an app to allow women to "anonymously send pictures of their Bedikah cloths to a Rabbi with Tahor app’s Rabbinically approved technology." May ...
2 votes
0 answers
87 views

If you're not overweight, can you still use a food scale and an app to count calories during Chol Ha'moed?

Background During Chol Ha'moed, more food than usual is available. The relevant science suggests that, when there's a lot of food variety available in our homes, we're more likely to overeat. Still, ...

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