You have a raspberry pi connected to all the sensors and a code running to trigger if the sensors are triggered. Each sensor and keypad would run to a different input on the pi. They should al be able to be powered with a single cell lipo. Is that what you are asking?
Answer:
Place holder
Explanation:
In computer programming, placeholder is a word, character or series of characters that is used to take up the space until the time when the space is actually needed. It is widely used in the sign up or login forms for web and mobile applications. For example, First Name, Last Name etc.
A programmer might have an idea that he will require this number of characters or values but he don't knows what the input will be, that’s why he uses the place holder.
Hope it helps!
Answer:
void main(){
string name;
printf("Enter Name\n");
stdin("%s",&name);
Printf("\nGreetings %s",name);
}
Explanation:
Here scanf is represented by stdin and we are using that scanner object to read the string value from user.The value which we read are printed in a new line using printf .The format specifier %s in printf is replaced by name variable
<span>Dynamic Network Address Translation (DNAT)</span>
Answer:
Incomplete Question.
I'll answer this question based on general terms
Explanation:
Two Factor Authentication, abbreviated as 2FA.
It is a type of authentication that requires the presentation of two credentials for access to personal data and information.
The credentials needed for a 2FA are
1. Either of the following; PIN, Password or Pattern
2. Your device or gadget which could be an ATM Card, Mobile Phone
3. Biometrics such as fingerprint, voice input
Number one is often referred to as "Something you know"
Number two is referred to as "Something you have"
Number three is referred to as "Something you are"
The 2FA doesn't require the three aforementioned credentials. It only needs just two of the credentials to provide its authentication.
