2 days ago · Belarus
MI Band is an interesting device. It is definitely a folk one, because I am sure that almost all of us have at least one friend who uses this bracelet. In addition, in the fourth version of the bracelet was able to surprise us all pretty.

Now to the review on this novelty.

The packaging for me was damaged even after revision 3 versions, as it turned out to be a huge rectangular shape. This is certainly not a minus, but for me it is not pleasant. In the box, we see:
• Instruction (in Chinese);
• The bracelet itself (very surprised that the strap from the 3rd version of the MI Band is suitable for the 4th);
• Charger of course blundered here and made extremely unpleasant.


The most important advantage of the Mi Band 4 is undoubtedly its large bright 1 ”AMOLED display. With this innovation, the company was able to fix the biggest problem of its trackers, poor visibility in the bright sun, i.e. If before people wanted to wear smart electronics on their hands, but did not want to spend big money on Apple and Samsung devices with their decent visibility in the sun, they bought Amazfit Bip, now they can do without Mi Band 4.

Bracelet strap and capsule

The strap is the same as it was from the first version - hypoallergenic pleasant to the touch material. The capsule of the bracelet sits in it like a glove, about the same as it was in the third generation. The capsule itself is slightly modified compared with the previous generation. If in the third it was round like a drop, then in the fourth it became as close as possible to the second generation of the bracelet, a nice flat surface with 2.5D rounding around the edges.


As I wrote earlier, the screen has become larger and brighter, now much more information will get in here, but besides this, now you can switch music directly and change the volume directly from the screen. With the release of four versions of the bracelet, it became possible to install a custom WatchFace. Also in the bracelet, there are new training regimes: swimming and training in the gym. How accurate they are, I cannot say, because I do not use these functions, but considering the fact that previous versions of bracelets did not cope well with this functionality, I think the fourth MI Band will not fail this year either.

As for the smart alarm clock and counting the number of steps.

He considers the steps as all previous versions, but the clever awakening never returned this sad fact with which it seems like it will have to be reconciled. If you still want to return the whole thing, then take a closer look towards paid applications. In the application, the Xiaomi team added vibration drawing, i.e. you go into the alarm clocks and draw tapas on the screen as you like, so that your bracelet vibrates.


The device worked for me for 9 days and lost 47% of the charge. I have included all notifications, measured about 5-6 times. By the way, heart rate measurements at the same level as in the previous version differ from a stationary heart rate monitor by a couple of points.
3 days ago · Villa San Giovanni, Italy
Jun 13 · Fairfield, United States of America
Fingerprint Recognition or Facial Recognition? Biometric Modalities Face to Face

Today, biometric applications are used across industries, institutions, and government establishments. In many business outfits, it is very crucial for the continuity of business operations that biometric systems keep functioning tirelessly. In institutions like hospitals and blood transfusion units, where precise recognition of patients and blood/organ donors can be crucial, biometrics eliminates the possibility of human errors and expedite overall healthcare operations by streamlining patient identification practice.

Fingerprint Recognition or Facial Recognition?

Biometrics Definition
Biometrics technology makes use of unique physiological and behavioral patterns of the human body. These patterns are formed randomly owing to different biological and environmental reasons. Randomness and complexity of details make these patterns good enough to be considered as unique. These biological or behavioral characteristics can be as obvious as facial structure or voice, which can even be recognized by human senses, or as unapparent as DNA sequence of vascular structure, which require special equipment and process for identification of an individual.

Despite the sizable difference in different biometric traits, they serve a common purpose: making personal identification possible with biometrics. Biometrics technology makes use of statistical, mathematical, imaging and computing techniques to uniquely map these patterns for an individual. These patterns are first captured by imaging or scanning and then taken through specialized algorithms to generate a biometric template, which is unique to the individual.

This article is talking about biometric technology and how it's applied in our daily life, check it out, you'll get a definition about the biometric.

Biometric modalities
A biometric modality is the type of human trail that a biometric system accepts as input. There are many biological and behavioral patterns in human beings that biometrics can leverage to identify them individually. Biometric modalities can be classified largely in three categories: Physiological, Behavioral and a combination of these two.

Physiological modalities
These modalities are related to the shape and size of the body, we can see many of the applications using this modality like fingerprint smart lock, facial recognition employee time attendance, POS, etc.

behavioral modalities
These modalities pertain to the human behavior which is expected to be consistent over time, for example, signatures, typing rhythm, gait (the way an individual walks). Behavioral patterns of a person develop over time and are believed to remain unchanged during the lifetime. These behavioral patterns can be measured and used to identify the individual. The most-seen application is the security inspections, the automatical entrance, etc.

Combination of physiological and behavioral modalities
These modalities depend on physiology as well as human behavior, for example, voice, for example, the Video Surveillance.

Choosing a biometric modality
Deploying a biometric modality depends on recognition application it is going to be used with, for example: for low-security door access, fingerprint-based access does the job, however, for logical access to a high-security network server, the user might have to authenticate with fingerprints as well as his or her voice print. Biometric technology application can be implemented using one (unimodal) or more than one (multimodal) approach that makes use of single or multiple biometric modalities respectively. In many online and mobile services, for example, app-based mobile banking or financial services application, a relatively newer approach is used called continuous authentication.

This approach comes out of the logic that a user should be monitored to make sure that the device or application is being used by the genuine user throughout the session. User activity can be tracked by usage pattern monitoring and hardware/sensor data to make sure that the device is in the right hands. Once a user passes the verification barrier, there is no way to make sure that it is the same user throughout the session. Continuous authentication solves this problem by leveraging behavioral biometrics that creates a unique user profile depending on usage patterns and device data, user’s authentication state can be tracked throughout the session with his unique user profile and access can deny in the middle of a session if any abnormalities are detected.

Keep reading >>
Jun 10 · Fairfield, United States of America
How A “Smart Door Lock” Can Keep My Children Safe?

Summer Holiday 2019 is about to come. Being a father, I question myself as to how a “Smart Door Lock” can keep my children safe?

Many friends probably don't know what's a smart lock? What's the first thing comes into your minds when I mention it, please comment below.

I want to tell you mine, I unconditionally think it's just controlled by our phone with the smart key app, it's convenient for us to unlock the door especially when we're in tearing hurry, we needn't search for the key in the huge bag.

Actually, apart from using the app to unlock the door, we can also open the door with the biometric technology - fingerprint, iris, palm, and face recognition applying in many surveillance and security devices, so that it performs more safely.

Many smart locks on marketing also support unlocking with the cards, key, password in case of the emergency.

Why should parents adopt the Smart Door Lock?
Especially parents are worried when it comes to the safety and security of their children being alone at home. Some may not trust their home with this Smart Home Technology.

As a member of the smart home system, the smart lock is remote access.
No home is safe with the growing number of intrusions, burglaries, and solicitations, even though the doors and all the entry points are secured. As a member of the smart home system, the smart lock is remote access, you will be able to lock or unlock your doors even when you are not at home. If your kids are left behind at home, you will be able to have peace of mind that all doors are locked even when your kids forget to do so.

Your child won’t be able to unlock the door unless you allow it on the system.
As kids grow up, they become curious and adventurous as they leave the house. With traditional lock systems, your child can easily step out of the door without your knowledge. But with smart locks, your child won’t be able to unlock the door unless you allow it on the system.

It's inevitable to leave your kids alone on the front of the door.
Once after school activities start, no one gets home at the same time, especially if you have more than one child. When you have people coming in and out of your house at all hours of the day, a smart lock is your best friend. The Smart Lock can hold access codes, so everyone in the family can have their own code to the front door. and use the Smart Key app to unlock or lock the door even when you're not at home. Then, if there is ever a time that someone is picking your child up, or gets home before you do, you can let them in with your smartphone.

Smart Door Lock Keeps Children Safe
Choose the right Smart Lock for your children
Smart Locking has revolutionized the traditional lock system with its sophisticated and reliable features.

ZKTeco adapts technology like a biometric fingerprint, smart cards, passcode, and facial recognition to enhance their smart door lock capabilities. Unlike traditional locking system, this smart technology is hard to manipulate.

ZKTeco AL40B Smart Key has the 5 functions together - biometric fingerprint, card, passcode, app, key. Lock and unlock your door from anywhere and give secure digital keys to guests, all from your phone. The security of our homes lays literally in our hands rather our fingertips now with these systems.

The feature that is available with our Smart Door Locks is by far most modern and secured.

A 24/7 activity log tracks who enters and exits your home. With unique keys for each user, you can identify who comes in and out or your abode. World's First 4-in-1 Keyless Entry Smart Lock with Code + Smartphone + Fingerprint + KeyCreate a password for your nannies, dog walkers, or visitors via your smartphone. Lockout Mode will allow only the administrator to open the door, and the Lockout Switch to enable or disable the mode. Bluetooth enabled lock will allow authorized users phone to unlock the door. Combine effortlessly with smart-home platforms, so homeowners can control their smart devices from the app.

I do see how Smart Home Technology is and will play a pivotal role in families with children.

Want to know more about several other Smart Home and Office products, visit our store at
May 27 · Napoli, Italy
Before reviewing the product, i want to point out that this review is the result of my personal experience and taste. Every form of critique directed to the product should not be taken as an extremely objective statement and should not break your deal, unless it is specifically told otherwise.

The Blitzwolf 20W portable speaker comes in a smooth metal body at the weight of 0.75kg and contains 2 10W 45mm drivers for a stereo sound audio reproduction. The product has build in microphone and 4.0 bluetooth connection. The battery is 5200mah.

Sound quality
When it comes to music quality, i rate this product 7/10. The sound is clear enough, the volume is loud(not the loudest) but it has just a little bit of distorsion in higher volume profiles, nothing drastic.
Concerning audio quality, a critical issue of this product is it cannot reproduce very low bass range ( you'll hear a little bit of distorsion and the drivers' physical vibration). It works pretty nice on mids, but then again, when you go up to the upper side of treble, it will have a hard time balancing the sound. Still, it works good and you can listen to your music without problems.

Bluetooth Connectivity Quality
For the connectivity quality you should keep in mind the product is not made for an extremely long range: bluetooth 4.0 guarantees stable bluetooth connection, even in a 10 meters distance, but when you have obstacles, people or walls between the speaker and the device it is connected to, the range will be much shorter, and it could cause small stutters and short connection losses if you get too far away.

Call and micrphone Quality
You can use this product for calls ( for example for group phone calls or other wi fi based calls) as it has a build-in mic. For my experience the sound is loud enough and clear in calls, but the mic sound is a bit muffled, so people won't be able to hear you very clearly. If that's the use you're going to buy this product for, then i suggest to try something else.

Battery life and ergonomics
The built in battery is a 5200mah li-ion cell, it does sustain many hours of playback, but the precise duration is up to the use you make of the product, the volume and the type of music you listen to. Generally speaking it can last at least 5 hours of playback at high volume with many different song types. ergonomy wise, the product is meant to be placed on a surface and not for hand transport : its shape, its weight, the absence of a belt hook or a hole in the speaker body to place a tie make this product suited for a static and stable use, more than a ''on the go'' use.

final overview:
if you can find this product for around 30-40 USD, and you need a product you can move around in your house, or to bring at someone's place, then it can be a good choice as it has acceptable clear and loud sound ( even if not suited for audiophiles), but keep in mind it is not waterproof nor dustproof, so watch out if you're going near pools or beaches. At the end of the day, it depends on the use you're going to do with it.
Hope you find this review helpful.
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