diff --git a/sms/india/nimbus/controllers/async_nimbus.py b/sms/india/nimbus/controllers/async_nimbus.py
index 0830cbf..d758ebf 100644
--- a/sms/india/nimbus/controllers/async_nimbus.py
+++ b/sms/india/nimbus/controllers/async_nimbus.py
@@ -199,6 +199,7 @@ class AsyncNimbusSMS:
 
         # Construct the basic structure of the response of this method:
         summary = SentSMSMessageModel(
+            client = "nimbusSmsIndia",
             sender = {"senderId": self.__sender_id},
             recipient = {"recipientNo": recipient_number},
             text = message,
diff --git a/sms/models/sms_message.py b/sms/models/sms_message.py
index 44c5a18..972f9c2 100644
--- a/sms/models/sms_message.py
+++ b/sms/models/sms_message.py
@@ -79,6 +79,11 @@ import datetime
 
 class SentSMSMessageModel(BaseModel):
 
+    client: str = Field(
+        description = "The name of the client (service) that was used.",
+        frozen = True
+    )
+
     ts: AwareDatetime = Field(
         description = "the time (utc) at which this message was sent by the sender",
         frozen = True,
diff --git a/web/certs/expiry.py b/web/certs/expiry.py
index 1b82ded..6086f01 100644
--- a/web/certs/expiry.py
+++ b/web/certs/expiry.py
@@ -35,6 +35,9 @@ import sys
 sys.path.append(".")
 sys.path.append("..")
 
+# System-level activities:
+import io
+
 # To check certs through cryptographic algorithms:
 from cryptography import x509
 from cryptography.hazmat.backends import default_backend
@@ -204,7 +207,7 @@ class CertExpiryCheck:
     # ┃ ┏┓┏┏┓┃  ┃ ┏┓┏┓╋┏
     # ┗┛┗┛┗┗┻┗  ┗┛┗ ┛ ┗┛
 
-    def load_local(self, path: str) -> bool:
+    def load_local(self, path: str | io.BytesIO) -> bool:
 
         """
         Loads a certificate stored on a local file path and checks for its validity.
@@ -221,8 +224,13 @@ class CertExpiryCheck:
         try:
 
             # Read the contents of the certificate file:
-            with open(path, 'rb') as f:
-                cert_data = f.read()
+            if isinstance(path, str):
+                with open(path, 'rb') as f:
+                    cert_data = f.read()
+            elif isinstance(path, io.BytesIO):
+                path.seek(0)
+                cert_data = path.read()
+            else: cert_data = None
 
             # Load the certificate:
             cert = x509.load_pem_x509_certificate(cert_data, default_backend())