SPRINGFIELD, Mass. (WWLP) - Springfield police are looking for the public's help to identify two suspects wanted in connection with allegedly placing a skimming device inside a convenience store over the weekend. Card skimming devices discovered at these Massachusetts Cumberland Farms According to the Springfield Police Department, detectives are investigating after four incidents of skimmers were located by an employee or retrieved by a suspect inside convenience stores. Police are looking to identify the suspects pictured who allegedly placed a skimming device over a point-of-sale device inside at least one of the convenience stores.   (Springfield Police Department)(Springfield Police Department)(Springfield Police Department) Businesses are being urged to be vigilant in checking for skimming devices at their point-of-sale devices, ATMs, and gas pumps daily. The Springfield police did not name the stores affected in the news release. If you can identify the suspects or have any information you are asked to contact the Detective Bureau at 413-787-6355 or anonymously Text-A-Tip. Text CRIMES (2-7-4-6-3-7) type SOLVE and your tip. What is a card skimmer? Credit: Springfield Police DepartmentCredit: Springfield Police DepartmentCredit: Springfield Police DepartmentCredit: Springfield Police Department Card skimmers are illegal devices installed at gas pumps, ATMs, and other locations that can steal credit and debit card information. When swiped, the skimmer scans your card information and uses Bluetooth to send card information to the thief’s computer or phone. How to detect a card skimmer Before putting your card into a reader, Springfield police say, there are some easy and effective ways to protect your information.  It is recommended never to use a debit card with a pin number unless absolutely necessary, instead choose the credit option. Be cautious of using non-bank ATMs. FICO reports that 60% of skimming occurs at privately-owned ATMs. Do a quick scan. Before using any machine, take a look to make sure it hasn’t been tampered with. If the card reader seems loose, crooked, or damaged that is a red flag. Check the keypad. If the numbers are hard to press or feel thick, it might have a false keypad installed and you should move on to the next machine. Block your PIN.  If you need to enter a PIN, cover the keypad with your other hand in case a camera is recording your number. Checking card transactions regularly and setting up account alerts can also help you spot suspicious activity. If you notice something wrong, call your card issuer immediately so they can cancel the card and protect your information. Local News Headlines Pentagon secrets leaker Jack Teixeira sentenced to 15 years in prison by a federal judge Gene Cassidy receives Melvin Jones Fellowship award Lawmakers continue to debate how to run emergency shelter system End-of-season dates announced for Springfield golf courses WWLP-22News, an NBC affiliate, began broadcasting in March 1953 to provide local news, network, syndicated, and local programming to western Massachusetts. Watch the 22News Digital Edition weekdays at 4 p.m. on WWLP.com.