diff --git a/src/plugins/impl/fingerprint.plugin.ts b/src/plugins/impl/fingerprint.plugin.ts
index 1f1fd6e..8cefa83 100644
--- a/src/plugins/impl/fingerprint.plugin.ts
+++ b/src/plugins/impl/fingerprint.plugin.ts
@@ -11,6 +11,8 @@ import { ExternalIdDbGateway } from '../../db/external.id.db.gateway';
 import { IsValidInstance } from 'protocol-common/validation/decorators/parameter/is.valid.instance.decorator';
 import { ValidateParams } from 'protocol-common/validation/decorators/function/validate.params.decorator';
 import { IsValidInstanceOf } from 'protocol-common/validation/decorators/parameter/is.valid.instance.of.decorator';
+import { BioAuthSaveParamsDto } from '../../remote/dto/bio.auth.save.params.dto';
+import { BioAuthSaveDto } from '../../remote/dto/bio.auth.save.dto';
 
 export class FingerprintPlugin implements IPlugin {
 
@@ -23,9 +25,9 @@ export class FingerprintPlugin implements IPlugin {
     ) { }
 
     /**
-     * The verify logic involves calling verify against the identity service, and then handling certain error codes
-     * by asking the identity service for the positions with the highest image quality
-     * TODO identity service could just handle both these tasks in one call.
+     * The verify logic involves calling verify against the Bio Auth Service, and then handling certain error codes by asking the Bio Auth Service for
+     * the positions with the highest image quality
+     * TODO - PRO-3134: Update this after Bio Auth Service handles both these tasks in one call.
      */
     @ValidateParams
     public async verify(
@@ -59,12 +61,12 @@ export class FingerprintPlugin implements IPlugin {
             }
         }
 
-        //  The identity service should throw this error on no match, but just to be safe double check it and throw here
+        //  Bio Auth Service should throw this error on no match, but just to be safe double check it and throw here
         if (response.data.status !== 'matched') {
             throw new ProtocolException(ProtocolErrorCode.FINGERPRINT_NO_MATCH, 'Fingerprint did not match stored records for citizen supplied through filters');
         }
 
-        // TODO right now the data we get from identity service uses did we should change it to agent id and then we don't need this conversion
+        // TODO right now the data we get from Bio Auth Service uses did we should change it to agent id and then we don't need this conversion
         return {
             status: response.data.status,
             id: response.data.did
@@ -77,17 +79,16 @@ export class FingerprintPlugin implements IPlugin {
             e.details = e.details || {};
             e.details.bestPositions = response.data;
         } catch (ex) {
-            Logger.error('Error calling identity service position quality check', ex);
+            Logger.error('Error calling Bio Auth Service position quality check', ex);
         }
         return e;
     }
 
-    public async save(id: string, params: any) {
-        // TEMP until the identity service is updated
+    public async save(id: string, params: BioAuthSaveParamsDto | BioAuthSaveParamsDto[]) {
         const data = Array.isArray(params) ? params : [params];
-        for (const datum of data) {
-            datum.did = id;
-        }
-        await this.bioAuthService.templatize(data);
+        const fingerprints: BioAuthSaveDto[] = data.map((param: BioAuthSaveParamsDto) => {
+            return {id, params: param};
+        });
+        await this.bioAuthService.bulkSave({fingerprints});
     }
 }
diff --git a/src/remote/bio.auth.service.interface.ts b/src/remote/bio.auth.service.interface.ts
index 0c929fc..b8b3020 100644
--- a/src/remote/bio.auth.service.interface.ts
+++ b/src/remote/bio.auth.service.interface.ts
@@ -1,6 +1,8 @@
+import { BioAuthBulkSaveDto } from './dto/bio.auth.bulk.save.dto';
+
 export abstract class IBioAuthService {
     abstract verifyFingerprint(position: number, image: string, dids: string): Promise<any>;
     abstract verifyFingerprintTemplate(position: number, template: string, dids: string): Promise<any>;
-    abstract templatize(data: any): Promise<any>;
+    abstract bulkSave(dto: BioAuthBulkSaveDto): Promise<any>;
     abstract qualityCheck(dids: string): Promise<any>;
 }
diff --git a/src/remote/dto/bio.auth.bulk.save.dto.ts b/src/remote/dto/bio.auth.bulk.save.dto.ts
new file mode 100644
index 0000000..fed9b57
--- /dev/null
+++ b/src/remote/dto/bio.auth.bulk.save.dto.ts
@@ -0,0 +1,9 @@
+import { BioAuthSaveDto } from './bio.auth.save.dto';
+import { ValidateNested } from 'class-validator';
+
+/**
+ * DTO for each fingerprint in the body of the request sent to Bio Auth Service's /save endpoint
+ */
+export class BioAuthBulkSaveDto {
+    @ValidateNested() readonly fingerprints: Array<BioAuthSaveDto>;
+}
diff --git a/src/remote/dto/bio.auth.save.dto.ts b/src/remote/dto/bio.auth.save.dto.ts
new file mode 100644
index 0000000..b958f71
--- /dev/null
+++ b/src/remote/dto/bio.auth.save.dto.ts
@@ -0,0 +1,11 @@
+import { BioAuthSaveParamsDto } from './bio.auth.save.params.dto';
+import { IsString, ValidateNested } from 'class-validator';
+import { Type } from 'class-transformer';
+
+/**
+ * DTO for the body of the request sent to Bio Auth Service's /save endpoint
+ */
+export class BioAuthSaveDto {
+    @IsString() readonly id: string;
+    @ValidateNested() @Type(() => BioAuthSaveParamsDto) readonly params: BioAuthSaveParamsDto;
+}
diff --git a/src/remote/dto/bio.auth.save.params.dto.ts b/src/remote/dto/bio.auth.save.params.dto.ts
new file mode 100644
index 0000000..ac71d77
--- /dev/null
+++ b/src/remote/dto/bio.auth.save.params.dto.ts
@@ -0,0 +1,17 @@
+import { FingerprintTypeEnum } from '../fingerprint.type.enum';
+import { IsEnum, IsInt, IsISO8601, IsNumber, IsOptional, IsString, Length } from 'class-validator';
+import { FingerprintPositionEnum } from '../fingerprint.position.enum';
+
+/**
+ * DTO for the params of each fingerprint in the body of the request sent to Bio Auth Service's /save endpoint
+ */
+export class BioAuthSaveParamsDto {
+    @IsInt() readonly type_id: number;
+    @IsISO8601() readonly capture_date: string;
+    @IsEnum(FingerprintPositionEnum) readonly position: FingerprintPositionEnum;
+    @IsOptional() @IsString() readonly image?: string;
+    @IsOptional() @IsString() readonly template?: string;
+    @IsOptional() @IsNumber() readonly quality_score?: number;
+    @IsOptional() @Length(2, 2) readonly missing_code?: string;
+    @IsEnum(FingerprintTypeEnum) readonly type: FingerprintTypeEnum;
+}
diff --git a/src/remote/fingerprint.position.enum.ts b/src/remote/fingerprint.position.enum.ts
new file mode 100644
index 0000000..2fedf21
--- /dev/null
+++ b/src/remote/fingerprint.position.enum.ts
@@ -0,0 +1,15 @@
+/**
+ * This enum is a simple way to capture which finger is represented by a given fingerprint.
+ */
+export enum FingerprintPositionEnum {
+    RIGHT_THUMB = '1',
+    RIGHT_INDEX = '2',
+    RIGHT_MIDDLE = '3',
+    RIGHT_RING = '4',
+    RIGHT_PINKY = '5',
+    LEFT_THUMB = '6',
+    LEFT_INDEX = '7',
+    LEFT_MIDDLE = '8',
+    LEFT_RING = '9',
+    LEFT_PINKY = '10'
+}
diff --git a/src/remote/fingerprint.type.enum.ts b/src/remote/fingerprint.type.enum.ts
new file mode 100644
index 0000000..f6ad476
--- /dev/null
+++ b/src/remote/fingerprint.type.enum.ts
@@ -0,0 +1,7 @@
+/**
+ * Currently supported modes of interacting with Bio Auth Service via fingerprints
+ */
+export enum FingerprintTypeEnum {
+    IMAGE = 'IMAGE',
+    TEMPLATE = 'TEMPLATE'
+}
diff --git a/src/remote/impl/bio.auth.service.ts b/src/remote/impl/bio.auth.service.ts
index 5f71a33..64c80b6 100644
--- a/src/remote/impl/bio.auth.service.ts
+++ b/src/remote/impl/bio.auth.service.ts
@@ -2,12 +2,11 @@ import { ProtocolHttpService } from 'protocol-common/protocol.http.service';
 import { AxiosRequestConfig } from 'axios';
 import { HttpService, Injectable } from '@nestjs/common';
 import { IBioAuthService } from '../bio.auth.service.interface';
+import { BioAuthBulkSaveDto } from '../dto/bio.auth.bulk.save.dto';
+import { FingerprintTypeEnum } from '../fingerprint.type.enum';
 
 /**
- * This service class is a facade for the IdentityService HTTP API.
- *
- * Right now the backend (ie which fingerprint template db to connect to) is defined by an environment variable, eventually we'll want this to
- * be set in a country profile, so the process of setting the backend will change.
+ * This service class is a facade for the Bio Auth Service HTTP API.
  */
 @Injectable()
 export class BioAuthService implements IBioAuthService {
@@ -21,12 +20,11 @@ export class BioAuthService implements IBioAuthService {
     }
 
     /**
-     * Send a request to IdentityService to verify a fingerprint image.
-     * TODO right now this keeps the identity service url the same, we probably want to change that so it better matches our plugin pattern
+     * Send a request to Bio Auth Service to verify a fingerprint image.
      *
      * @param position The position of the finger that the fingerprint template refers to.
      * @param image The image of the fingerprint.
-     * @param dids A comma-separated list of dids that the fingerprint template may correspond to.
+     * @param dids A comma-separated list of dids that the fingerprint may correspond to.
      */
     public async verifyFingerprint(position: number, image: string, dids: string): Promise<any> {
         const request: AxiosRequestConfig = {
@@ -45,7 +43,7 @@ export class BioAuthService implements IBioAuthService {
     }
 
     /**
-     * Send a request to IdentityService to verify a fingerprint template.
+     * Send a request to Bio Auth Service to verify a fingerprint template.
      *
      * @param position The position of the finger that the fingerprint template refers to.
      * @param template The template of the fingerprint.
@@ -62,28 +60,29 @@ export class BioAuthService implements IBioAuthService {
                 filters: {
                     dids
                 },
-                imageType: 'TEMPLATE',
+                imageType: FingerprintTypeEnum.TEMPLATE,
             },
         };
         return this.http.requestWithRetry(request);
     }
 
     /**
-     * TODO the identity service should update the templatizer endpoint to accept data in the format { id, filters, params }
-     *   Until it does, we just forward the params as the data it's currently expecting
+     * Send a request to Bio Auth Service to save one or more fingerprints. They may be fingerprint templates or images.
+     *
+     * @param dto Body of the request to be sent to Bio Auth Service. See the class definition for the shape.
      */
-    public async templatize(data: any): Promise<any> {
+    public async bulkSave(dto: BioAuthBulkSaveDto): Promise<any> {
         const request: AxiosRequestConfig = {
             method: 'POST',
-            url: `${this.baseUrl}/api/v1/templatizer/bulk/template`,
-            data,
+            url: `${this.baseUrl}/api/v1/save`,
+            data: dto,
         };
         return this.http.requestWithRetry(request);
     }
 
     /**
-     * Queries the identity service to get the finger positions with the best quality scores
-     * TODO the identity service should update the positions endpoint to accept data in the body instead of via url params
+     * Queries the Bio Auth Service to get the finger positions with the best quality scores
+     * TODO PRO-3084: use the Bio Auth Service POST /positions endpoint to accept data in the body instead of via url params
      */
     public async qualityCheck(dids: string): Promise<any> {
         const request: AxiosRequestConfig = {
diff --git a/src/sms/sms.service.ts b/src/sms/sms.service.ts
index 156856c..99dd219 100644
--- a/src/sms/sms.service.ts
+++ b/src/sms/sms.service.ts
@@ -34,7 +34,7 @@ export class SmsService {
 
         const externalIds: ExternalId[] = await this.externalIdDbGateway.fetchExternalIds(VerifyFiltersDto.getIds(filters));
         if (externalIds.some((id: ExternalId) => id.did !== externalIds[0].did)) {
-            throw new ProtocolException(ProtocolErrorCode.DUPLICATE_ENTRY, 'Provided filters did not uniquely identity a did');
+            throw new ProtocolException(ProtocolErrorCode.DUPLICATE_ENTRY, 'Provided filters did not uniquely identify a did');
         }
         const did: string = externalIds[0].did;
 
diff --git a/test/e2e/escrow.fingerprint.e2e-spec.ts b/test/e2e/escrow.fingerprint.e2e-spec.ts
index 511defa..c37fa29 100644
--- a/test/e2e/escrow.fingerprint.e2e-spec.ts
+++ b/test/e2e/escrow.fingerprint.e2e-spec.ts
@@ -30,7 +30,7 @@ describe('EscrowController (e2e) using fingerprint plugin', () => {
         jest.setTimeout(10000);
 
         status = 'matched';
-        did = 'agentId123'; // Right now identity service returns did, eventually it will return agentId
+        did = 'agentId123'; // Right now Bio Auth Service returns did, eventually it will return agentId
 
         const mockAgencyService = new MockAgencyService('foo');
         const mockBioAuthService = new MockBioAuthService(status, did);
diff --git a/test/mock/mock.bio.auth.service.ts b/test/mock/mock.bio.auth.service.ts
index ef9261b..19157ea 100644
--- a/test/mock/mock.bio.auth.service.ts
+++ b/test/mock/mock.bio.auth.service.ts
@@ -1,10 +1,11 @@
 import { IBioAuthService } from '../../src/remote/bio.auth.service.interface';
+import { BioAuthBulkSaveDto } from '../../src/remote/dto/bio.auth.bulk.save.dto';
 
 export class MockBioAuthService implements IBioAuthService {
 
     constructor(private readonly status: string, private readonly did: string) {}
 
-    async templatize(data: any): Promise<any> {
+    async bulkSave(dto: BioAuthBulkSaveDto): Promise<any> {
         return Promise.resolve(undefined);
     }