38 votes
Accepted

What makes a smart phone "kosher"?

A good question, let me outline the situation in Israel: 20 years ago everyone used the same 2G Nokias, Sonys, etc. Some 15 years ago, with the latest developments in phone technology, namely SMS, ...
Al Berko's user avatar
  • 25.7k
15 votes
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Is an on-call doctor allowed to read non-emergency text messages on Shabbat?

It is a Mitzva to desecrate Shabbat to save lives (OC 328:2), even if it is only doubtful if a life is in danger (329:3), and one should even do this Mitzva with alacrity (329:1). The Shulchan Arukh ...
Double AA's user avatar
  • 96.9k
11 votes
Accepted

Is there an online source for trope occurrences?

I don't have enough rep to comment above, but I'm the creator of quantifiedcantillation.nl, and since I saw a few referrals from this question I thought I'd stop by. It looks like my site should be ...
Noleli's user avatar
  • 296
11 votes
Accepted

Davening with a Minyan in China

I don't know if there's such a system available at the moment but I came across a project on Kickstarter [ JPal ] that aims to automate this process. According to the developers people can create a ...
David Lynch's user avatar
11 votes

What makes a smart phone "kosher"?

For Israel and the USA: TAG certifies individual phones in the USA with a holographic sticker. Israel has a vaad that prints their hechsher directly on the phone (as is appropriate to their stricter ...
LN6595's user avatar
  • 5,312
10 votes

Microphone for Meggilah

R' Shlomo Zalman Auerbach1 discusses the entire issue of recreated sounds in Shu"t Minchas Shlomo siman 9. His basic synopsis is that since the sound is being converted from sound waves to electrical ...
Y     e     z's user avatar
10 votes

Jewish Minecraft instructions?

Here is a YouTube video of someone's actual Minecraft model of the (first) Beit Hamikdash. If building based on that isn't enough, they provide some links in the video description. Disclaimer: I don'...
Scimonster's user avatar
9 votes
Accepted

Studying Torah while lying on a bed?

I saw this interesting answer by Rav Aviner to a similar question: Q: Is it permissible to learn Torah while laying in bed or on a couch? A: One must learn Torah in awe, fear and trembling (Berachot ...
Adam's user avatar
  • 289
8 votes

While playing a computer game, may I "worship" one of the game's "gods" to help me win?

A seemingly very similar question is posed by Rabbi Gil Student on his website https://www.torahmusings.com/2017/05/video-game-idolatry based on a version of the game Zelda. He goes through several ...
postinganonymously's user avatar
8 votes

Online tool for minyan management?

JPal should solve this issue. Please check this thread on SE: Davening with a Minyan in China Details: Minyan On Demand let's you create a minyan anywhere in the world and instantly have ...
Arkin's user avatar
  • 324
8 votes
Accepted

Are there any contemporary "Gedolim" that prohibit the use of davening from a smart phone?

Before discussing praying on a smart phone, there is the question of even having it enter the synagogue. Sephardi Chief Rabbi of Israel, R. Yitzhak Yosef (the son of R. Ovadia Yosef), considers some ...
Aryeh's user avatar
  • 11.2k
8 votes

Pirating software that has already been bought

When you purchase a DVD like you are describing, there is a 'terms of use' agreement, a 'terms and conditions' of sale and multiple copyrights (often in compliance with different jurisdictions around ...
Yaacov Deane's user avatar
  • 13.8k
8 votes

Can DNA be used as evidence to prove that someone is Jewish?

The use of DNA testing has been hotly debated in a number of cases, e.g., proving parenting to obtain child support, checking if a person died to permit his wife to remarry, preventing inheritance, ...
mbloch's user avatar
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8 votes
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Trying to find a quote of the Cheshek Shlomo

The Chesek Shlomo(which is Rabbi Shlomo Hakohen) can be found in the back of the Shulchan Aruch (Melachim) (Kovetz Mefarshim) which has many meforshim on each siman. Here is the text you are looking ...
sam's user avatar
  • 40.7k
7 votes

Microphone for Meggilah

Rav Moshe in IG"M O.C.(2) siman 108 and O.C.(4) siman 126 notes that "some experts" say that the sound produced by a microphone is not the actual person's voice magnified, rather it's a new sound. ...
Asher's user avatar
  • 410
7 votes
Accepted

Sous-vide cooking for Shabbat

In a shiur you can listen to here Rabbi Aryeh Lebowitz discussed some of the issues involved with sous vide which is begun before shabbos. They are: Shehiyah. Leaving foods on a heat source. Garuf ...
user6591's user avatar
  • 33.2k
7 votes
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Comprehensive map/list of active Orthodox synagogues in the U.S

Check out this site. Click on each state to get cities and then click on each city to get a list of just about (if not all) the minyanim in that city.
KolHashoneh18's user avatar
7 votes
Accepted

Are there any fonts that allow for the name of Hashem to be typed the way it is in Sephardi siddurim?

Yes, here are screenshots of Windows Character Map showing DBS-Frank, DBS-Keren DBS-Stam, and DBS-Vilna:
Adám's user avatar
  • 6,646
7 votes
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Can a robot count in a minyan?

R. Tzvi Hirsch Ashkenazi has a responsum (Shu"t Chacham Tzvi siman 93) about whether a being created using the Sefer Yetzira can count for a minyan, and his conclusion is that it cannot. אלא ודאי ...
Alex's user avatar
  • 48.9k
6 votes

Pirating software

I cannot provide the name of a posek allowing the use of pirated software. Most Internet references to rabbanim allowing this are anonymous and along the lines of "a friend has told me", "I heard from"...
mbloch's user avatar
  • 45.6k
6 votes

Can a smartphone count as a sefer for stacking purposes?

I don't have sources, but I offer the following reasoning: There is no issue of erasing with digital representations of the divine name. Text on a screen is neither permanent nor writing. Nobody (as ...
Monica Cellio's user avatar
6 votes
Accepted

Is it forbidden to use a sand timer on shabbos?

The issue at hand is measuring. See the Shulchan Aruch siman 308 siff 51 and the Ramma who says the accepted practice is to not use sand timers. See also Rabbi Ribiat's 39 Melachos volume 4 page 979....
user6591's user avatar
  • 33.2k
6 votes
Accepted

Doing Rambam using audio shiur?

Chabad provide two audio shiurim for one perek a day here which strongly suggests that they feel that it fulfills the requirements of the Rebbe zatzal.
Avrohom Yitzchok's user avatar
6 votes

How did Abraham perform brit milah?

The description of Abraham's circumcision in the Bible doesn't say what tool he used. However, Joshua is described as having circumcised the Israelites with swords of stone (Joshua 5:2), and, as רבות ...
b a's user avatar
  • 24k
6 votes
Accepted

Use of an automatic toilet on Shabbos?

Halachipedia brings a number of opinions permitting this R Josh Flug (Sukkot To Go 5770, p. 27) writes that it is certainly permissible to use a toilet with an automatic flusher if no other ...
mbloch's user avatar
  • 45.6k
6 votes

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

First, some background information: Tahor is an application connecting women with rabbanim to answer questions on bedika cloths. The application uses various techniques to ensure proper color and size ...
mbloch's user avatar
  • 45.6k
6 votes

Egg donation within a family

Nishmat's Women’s Health and Halacha deals with some of these issues. The page on “Egg Donation & Surrogacy” contains this information: There is no clear halachic consensus as to whether the ...
Avrohom Yitzchok's user avatar
5 votes

"Siri, sing to me" - Kol Isha?

The reason we are not allowed to hear woman sing is Because "kol isha airva" (The voice of a woman is nakedness) a womans singing voice is considered a part of her nakedness. It is forbidden to ...
DovidShaffier's user avatar
5 votes

What technology did King Solomon have?

R. David Halevi Segal writes that Moses (theoretically) had the technology of printing: Turei Zahav Y.D. 271:8 ואם איתא דמעשה הדפוס הוה חקיקה קשה מנא לן דהיה על ידי שמיר שהוא דבר שאינו מצוי דילמא היה ...
Alex's user avatar
  • 48.9k
5 votes
Accepted

Using the Coravin Wine Preserver on shabbat

Assuming the question is only regarding the insertion of the needle on shabbos, and not placed before shabbos, this particular device presents a few issues within the prohibition of “creating a ...
Shoel U'Meishiv's user avatar

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